Related
I have this Griffin Dual USB PowerJolt Car Charger and its been working perfectly on all my devices, Playbook, Blackberry 9900, Samsung Galaxy S3, iPhone 3G, iPad 2 and many others but for some reason, this charger just don't want to work with my Nexus 7. I don't know why its so picky and wondering if you guys could help me identify the problem and preferably with a good working solution.
I tried opening it up and follow the advice from http://www.amazon.com/gp/customer-m...m_ciu_pdp_images_0?ie=UTF8&index=0&isremote=0. Both pins are already been soldered together but the Nexus still isn't charging!!
This makes me wonder where's the USB standard? How are some device / chargers so picky? What did the manufacturers do to prevent charging on other devices or charging through a non compatible charger?
- Charles
You may get flamed for this question because chargers have been discussed a LOT in this particular forum. It seems that none of the discussions show up on the first page at the moment.
Do some searching here for chargers but let me refer you to one of the better threads: http://forum.xda-developers.com/showthread.php?t=1791717
short/y said:
You may get flamed for this question because chargers have been discussed a LOT in this particular forum. It seems that none of the discussions show up on the first page at the moment.
Do some searching here for chargers but let me refer you to one of the better threads: http://forum.xda-developers.com/showthread.php?t=1791717
Click to expand...
Click to collapse
Thanks a lot. I did read up all the posting regarding the USB charging issue on the N7 but I still can't find the answers. I read about people having the Griffin PowerJolt and not able to charge their device.
After downloading the Battery Monitor Widget and plugging to my Griffin PowerJolt (short D+, D-), the device is charging (estimate: 384mA) but still not showing as charging. It shows Discharging and Unplugged. I don't think its the USB cable since the cable works on my PC.
So what causes this issue?
- Charles
Your answer is here http://forum.xda-developers.com/showthread.php?p=29983624#post29983624
It doesn't matter why, just that your Griffin does not do a good job of charging. If you want more either buy oem or any charger designed to work with Samsung, those devices should work better.
Troute said:
Your answer is here http://forum.xda-developers.com/showthread.php?p=29983624#post29983624
It doesn't matter why, just that your Griffin does not do a good job of charging. If you want more either buy oem or any charger designed to work with Samsung, those devices should work better.
Click to expand...
Click to collapse
I guess I still blame on the N7 for being so "picky" since the Griffin USB charger charges ALL devices, including iPad, Playbook, Samsung S3, iPhone and Blackberry but just not N7.
- Charles
chaddeus said:
I guess I still blame on the N7 for being so "picky" since the Griffin USB charger charges ALL devices, including iPad, Playbook, Samsung S3, iPhone and Blackberry but just not N7.
- Charles
Click to expand...
Click to collapse
Yep, the Nexus 7 is picky. No question about it. But your chargert *does* charge your Nexus 7, the Nexus just doesn't indicate it's charging.
Personally, I bought two KMASHI chargers from Amazon. It's a 5V 2A charger and it works great. Charges at greater than 1Ah and the N7 indicates it's charging. Won't charge an iPad but it works for me. The one I bought is http://www.amazon.com/gp/product/B008XQYH1G but it shows as unavailable now. I suspect the other KMASHI chargers will work the same, though.
short/y said:
Yep, the Nexus 7 is picky. No question about it. But your chargert *does* charge your Nexus 7, the Nexus just doesn't indicate it's charging.
Personally, I bought two KMASHI chargers from Amazon. It's a 5V 2A charger and it works great. Charges at greater than 1Ah and the N7 indicates it's charging. Won't charge an iPad but it works for me. The one I bought is http://www.amazon.com/gp/product/B008XQYH1G but it shows as unavailable now. I suspect the other KMASHI chargers will work the same, though.
Click to expand...
Click to collapse
It charges it but its slow. Being rated at 1A, its can only charge at 300mA+ so its rather disappointing plus the charging isn't consistent. Sometimes when I plug in, it will charge, sometimes not so its another disappointment. But I guess I quickly adapt it and don't bother too much now.
I can still use my in car Head Unit with a build in USB port. At least I am getting 400mA+ and it shows as charging so I am ok
- Charles
Ive been recommending this Sprint 2A dual usb charger to everyone. Its a OEM charger so you can expect a high quality product that works as it should and it puts out the required juice to rapidly charge the N7. It also has the added benefit of doubling as a wall charger. Ive had mines for about a week so I can confirm it does indeed work! http://www.ebay.com/itm/130712043019?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649#ht_1459wt_1399
Hey All.. I looked forever to find a solution. The Targus 2A car charger has a small (3") adapter cable that comes with it purportedly for Galaxy Tab. That little cable with the data wires shorted on the device end allows the N7 to be charged from ANY 2A car charger. I'm using the adapter with a Scosche dual 2.1 Amp Car Charger
Adapter picture
Targus Charger
Edit: I just built a usb cable with the data wires shorted on the Nexus end (cut, strip, short micro usb end green and white, remake connections red to red and black to black, insulate splices individually, wrap all in electrical tape or heat shrink for strength and beauty) and it works with all chargers. Took about 20 minutes.
Hey Everyone,
It's become kinda obvious now that i really need to change out all my old 1A chargers for 2A chargers now.
The one that comes with the phone is nice - if I didn't need the adapter to go with it. Now it's huge and chunk.
I'd like a pretty small charger, like the wonderful 1A TC U260 I got with my mytouch 4g.
I'm considering the following:
PowerGen Dual USB 2A 10W Car charger:
http://www.amzn.com/gp/product/B006...=1789&creative=390957&creativeASIN=B006SU0SX0
PowerGen Dual Port Travel Wall Charger
http://www.amazon.com/PowerGen-Travel-Charger-Samsung-included/dp/B0073FE1F0/ref=cm_cr_dp_asin_lnk
Griffin GC23139 PowerJolt Dual car charger
http://www.amazon.com/Griffin-GC231...e=UTF8&qid=1349479987&sr=1-1&keywords=GC23139
(I really liked their dual mini which I used for a long time)
Any recommendations?
That first wall charger looks like something I'd buy. The charger and adapter I got from handtec is just so huge and ugly
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
How about the old HP touchpad chargers. IIRC those are 2a chargers. And they are cheap
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
I bought this one. Have not recieved it yet but looks good on paper.
http://pages.ebay.com/link/?nav=item.view&id=170905466556
Sent from my GT-N7100 using xda app-developers app
This is kinda related to this thread
Can I use another USB cable with the original note 2 charger and still get 2A from it? I feel like the USB cables for my sgs2 fit better in my note 2 than the one that comes with it.
none of those car chargers will work if you plan on using the phone
ChodTheWacko said:
Hey Everyone,
It's become kinda obvious now that i really need to change out all my old 1A chargers for 2A chargers now.
The one that comes with the phone is nice - if I didn't need the adapter to go with it. Now it's huge and chunk.
I'd like a pretty small charger, like the wonderful 1A TC U260 I got with my mytouch 4g.
I'm considering the following:
PowerGen Dual USB 2A 10W Car charger:
PowerGen Dual Port Travel Wall Charger
Griffin GC23139 PowerJolt Dual car charger
(I really liked their dual mini which I used for a long time)
Any recommendations?
Click to expand...
Click to collapse
I have done a lot of research on this. If it is compatible with ANY apple products then it will not charge with your cable due to the USB standard not being the same. You will have to either mod the product or the cable to get the full 2a charge. Plus I believe the Powergen and the griffin are only 2a total output so if you are charging 2 devices it will only be 1a and 1a ports. You need to look for a 4a total output. I have yet to find any that work. If anyone can find one please let me know. Charging with a 1a charge and using a GPS you will lose power as it does not charge fast enough. You need a full 2a. p.s. had to remove the outside links because I havent posted 10x yet.
yankees177 said:
If it is compatible with ANY apple products then it will not charge with your cable due to the USB standard not being the same.
Click to expand...
Click to collapse
This is not quite true.
I believe Apple only has high speed charging if you don't use an 'apple' USB port, similar to how you don't get high speed charging if you use a USB data cable versus a charging cable.
To be 100% I don't understand how it works exactly.
I can tell you, however, the following:
1) My Griffin charger happily charged my galaxy note even going full blast (GPS/bluetooth/screen on), and I bought some iphone chargers to help my friends out, and they charged their phones (slowly) with my charger too.
2) The powergen 10W charger I put above also happily (and quickly) charges my Note II going full blast.
It actually has a different 'Apple' vs 'non apple' USB port. Non-apple stuff may not charge in the apple slot, but that's not a big deal to me. I have only one phone. My iphone friends are usually the ones running out of power anyway, so it's kind of nice one side is applely.
- Frank
to the OP, try this:
http://www.amzn.com/Mediabridge-Hig...&qid=1351550361&sr=1-12&keywords=powergen+3.1
then get a charging cable:
http://www.amzn.com/Naztech-Micro-U...1351550441&sr=1-2&keywords=usb+charging+cable
or if you have an extra cable lying around, mod it. See this post to get a better idea:
http://forum.xda-developers.com/showpost.php?p=22546114&postcount=1
Thread linked for reference:
http://forum.xda-developers.com/showthread.php?t=1686971
I have many 2a carchargers that worked great with a gs3 even an iPad that won't provide enough juice to the note to actually charge it while doing intensive tasks like mhl out in the car.
if anyone finds a car charger that actually works post it out we need a fast charge custom kernel.
I have a thread in the general note Sprint forum thatwe are discussing this as well and it seems no charger will work but an adapter I'm waiting on May
what about this?
http://www.amazon.com/gp/product/B00845NI8E/ref=oh_details_o00_s00_i00
dual 2A port car charger and comes with a Free MicroUSB cable that can handle faster charging. I ordered on so we'll see
peekeesh said:
to the OP, try this:
http://www.amzn.com/Mediabridge-Hig...&qid=1351550361&sr=1-12&keywords=powergen+3.1
This appears, from the reviews, to be an "apple"ish charger and doesn't work well with android devices.
Click to expand...
Click to collapse
Would this work?
http://pages.ebay.com/link/?nav=item.view&id=150928933202
yankees177 said:
I have done a lot of research on this. If it is compatible with ANY apple products then it will not charge with your cable due to the USB standard not being the same. You will have to either mod the product or the cable to get the full 2a charge. Plus I believe the Powergen and the griffin are only 2a total output so if you are charging 2 devices it will only be 1a and 1a ports. You need to look for a 4a total output. I have yet to find any that work. If anyone can find one please let me know. Charging with a 1a charge and using a GPS you will lose power as it does not charge fast enough. You need a full 2a. p.s. had to remove the outside links because I havent posted 10x yet.
Click to expand...
Click to collapse
Im looking for 2A on each port too wall charger and only finds these.
Car charger:
http://www.amazon.com/Qmadix-QM-DMCH4-2-AP-WH-Twin-Tablet-Charging/dp/B008AGMO7S/ref=pd_cp_e_1
Wall charger, but thinks it divides 4A on each port?
http://www.alibaba.com/product-gs/650723185/UL_Approval_4A_USB_Charger_For.html
Wall charger:
http://www.thinkgeek.com/product/efbe/#tabs
Why the heck are all for ipads, iphone and no EU plug.
I got an amazon branded 2A single usb charger about 6 months ago for another phone. It charges my Note2 quick. Sorry no links...
Sent from my SGH-T889 using Tapatalk 2
What about this please? Need input.
i.Sound Portable Charger
Has 16,000 mah
Input: 12V 1A
Output: ''5V 2.1A on each connector 2.5 A together''
I charge a number of things on here...
A friend has me a bit confused saying this could damage the charging mechanisms of the phone cause it has too much voltage?
Any input please?
Thanks
One Car Charger that works
Hello,
Whether a charger works or not depends on what DCP (Direct Charge Port) modes it supports.
I suspect the GN2 uses Shorted DCP, where the USB data lines (D+ and D-) are shorted. Apple chargers sense 2.4Vdc on these lines to allow the charger to ramp to full current. Asus and some Sammy TABs use 1.2Vdc to enable full current. This is to distinguish real USB ports from chargers, and to "encourage" you to use the manufacturer's provided charger.
It would be nice if someone can confirm what DCP mode the GN2 actually uses. Not that the charger manufacturer's publish what modes they support.... However, the charger IC manufacturer's (TI, Maxim) are beginning to get good at DCP autodetection which is going to make it much easier for us consumers.
As far as finding chargers that work,
I bought a 2.1A dual car charger at Walmart, model "i-xt" that works well with the GN2 and is listed as "on AC" when connected. Implying full current.
Cheers,
-Plaz
---------- Post added at 12:43 PM ---------- Previous post was at 12:31 PM ----------
rockky said:
i.Sound Portable Charger
Has 16,000 mah
Input: 12V 1A
Output: ''5V 2.1A on each connector 2.5 A together''
I charge a number of things on here...
A friend has me a bit confused saying this could damage the charging mechanisms of the phone cause it has too much voltage?
Any input please?
Thanks
Click to expand...
Click to collapse
You don't have to worry about your phone being damaged. Phones have built-in protection for over-voltage and over current. 5Vdc is proper voltage for USB devices anyway (Output 5V, as listed in the specs). The catch is if the phone allows full current charging. That depends on the DCP mode of the charger. I'm not positive what mode the GN2 truly supports. If you already have the charger, you can determine if full current is being used by checking under settings -> battery while connected to the charger. If you see the "On AC" verbiage, the phone is in full current mode. If not, the charger is limiting to 500ma and acts like a standard USB port. You phone will still charge, but it will take longer.
Clear as mud?
Cheers,
-Plaz
http://www.amazon.co.uk/dp/B0044E7MNG/ref=cm_sw_r_an_am_ap_am_gb?ie=UTF8
Would this work?
Sent from my GT-N7105 using Tapatalk 2
Thanks
QUOTE=Plazmid;33523324]Hello,
Whether a charger works or not depends on what DCP (Direct Charge Port) modes it supports.
I suspect the GN2 uses Shorted DCP, where the USB data lines (D+ and D-) are shorted. Apple chargers sense 2.4Vdc on these lines to allow the charger to ramp to full current. Asus and some Sammy TABs use 1.2Vdc to enable full current. This is to distinguish real USB ports from chargers, and to "encourage" you to use the manufacturer's provided charger.
It would be nice if someone can confirm what DCP mode the GN2 actually uses. Not that the charger manufacturer's publish what modes they support.... However, the charger IC manufacturer's (TI, Maxim) are beginning to get good at DCP autodetection which is going to make it much easier for us consumers.
As far as finding chargers that work,
I bought a 2.1A dual car charger at Walmart, model "i-xt" that works well with the GN2 and is listed as "on AC" when connected. Implying full current.
Cheers,
-Plaz
---------- Post added at 12:43 PM ---------- Previous post was at 12:31 PM ----------
You don't have to worry about your phone being damaged. Phones have built-in protection for over-voltage and over current. 5Vdc is proper voltage for USB devices anyway (Output 5V, as listed in the specs). The catch is if the phone allows full current charging. That depends on the DCP mode of the charger. I'm not positive what mode the GN2 truly supports. If you already have the charger, you can determine if full current is being used by checking under settings -> battery while connected to the charger. If you see the "On AC" verbiage, the phone is in full current mode. If not, the charger is limiting to 500ma and acts like a standard USB port. You phone will still charge, but it will take longer.
Clear as mud?
Cheers,
-Plaz[/QUOTE]
I bought this:
http://www.amazon.com/gp/product/B005AWO8V0/
It's 2A and works great. I like that the cord is attached, so no losing a USB cable or anything. Also has an integrated USB for other devices.
Plazmid said:
Hello,
Whether a charger works or not depends on what DCP (Direct Charge Port) modes it supports.
I suspect the GN2 uses Shorted DCP, where the USB data lines (D+ and D-) are shorted. Apple chargers sense 2.4Vdc on these lines to allow the charger to ramp to full current. Asus and some Sammy TABs use 1.2Vdc to enable full current. This is to distinguish real USB ports from chargers, and to "encourage" you to use the manufacturer's provided charger.
It would be nice if someone can confirm what DCP mode the GN2 actually uses. Not that the charger manufacturer's publish what modes they support.... However, the charger IC manufacturer's (TI, Maxim) are beginning to get good at DCP autodetection which is going to make it much easier for us consumers.
As far as finding chargers that work,
I bought a 2.1A dual car charger at Walmart, model "i-xt" that works well with the GN2 and is listed as "on AC" when connected. Implying full current.
Cheers,
-Plaz
---------- Post added at 12:43 PM ---------- Previous post was at 12:31 PM ----------
You don't have to worry about your phone being damaged. Phones have built-in protection for over-voltage and over current. 5Vdc is proper voltage for USB devices anyway (Output 5V, as listed in the specs). The catch is if the phone allows full current charging. That depends on the DCP mode of the charger. I'm not positive what mode the GN2 truly supports. If you already have the charger, you can determine if full current is being used by checking under settings -> battery while connected to the charger. If you see the "On AC" verbiage, the phone is in full current mode. If not, the charger is limiting to 500ma and acts like a standard USB port. You phone will still charge, but it will take longer.
Clear as mud?
Cheers,
-Plaz
Click to expand...
Click to collapse
So I understand the shorting D+/D- internally or via charging cable to enable "AC" charging. I understand that Apple and apparently Sammy/Asus use voltage on those lines to signal the requirement for full current. Here's my question: if my Note2 is connected to brand X charger and it says AC charging in the settings under battery, does that mean I am theoretically pulling the max current of that brand X charger. This of course assumes the battery is empty enough, temperatures of the battery and charger are low enough, etc...
What I'm getting at is does having a shorted charger or cable with an android on an iCharger give us full iPower? Gawd that sounds horrible doesn't it! :silly: Or, if you're getting "AC" from the iCharger is it really only 1.1A or 1.6A (just tossing those numbers out there) vice the 2.1A it would be charging an iPad at?
EDIT - Post #6 has a quote from Kensington confirming the charger does not work with the Nexus Tablet
So been trying to get a dual-USB 2.1A charger to use with my Nexus 7 and my old desire-Z phone (I also have a 1st gen iPad so figured would be a nice perk for both ports to deliver that juice).
I even went as far as buying a new USB Cable thinking something was wrong with my cable and flashing a couple of different kernels (thinking it was maybe that).
Fact is whenever I plug my N7 into a Kensington AbsolutePower 4.2 w/ PowerWhiz (K39690AM), Battery Monitor Pro widget will say in green "AC Plugged", "Discharging", and if it does show "Charging", it's only drawing in around 130mA or so. But yet on my Desire-Z (G2) I plug that in, it'll show maybe around 500mA (it won't go over 1A because it's designed not to for smart phones).
However If I plug the N7 into a Samsung 2.1A charger that came with a Galaxy Tab 2 7.0, The N7 will show a power draw from the charger a little above 1,800mA (and then goes down to around 500 or less once it hits 99%), similar situation with the samsung charger + my G2.
So I'm constantly googling trying to figure out whats up, and the only thing I've come across are various reviews on Amazon (they list this as a Dual 2.1A USB charger), with some complaints saying they don't work with Asus Tablets and another saying it wouldn't charge much at all on his Nexus 10.
So I'm wondering... what's up with that, and why does it not say it's not compatible on the box (though guess they sort of did by excluding Asus and Google from the list of brands on the side).
Its charging. Just the os is not showing it properly
Sent from a phone that's 2 Note-worthy, via XDA Premium HD app.
madman604 said:
Its charging. Just the os is not showing it properly
Sent from a phone that's 2 Note-worthy, via XDA Premium HD app.
Click to expand...
Click to collapse
As I said, I'm using Battery Widget Monitor Pro. IF it was only the OS it would show the exact same deal with the Samsung 2.1A Charger, Nook 1A charger, HTC 1A charger. But instead on ALL chargers except the Kensington one, it shows a much higher charge rate (on the 1A around 800mA charge, on the Samsung around 1.7A charge).
But on the Kensington one never more than 500mA (usually around 300-400). I even exchanged the unit for a new one, and still the exact same behavior. I think the powerWhiz feature of the charger is detecting it not as a tablet but rather as a generic USB Device and is not providing more than 500mA for 'safe' charging. Just like how it won't charge my phone past 1A since it's detected as a SmartPhone even though it's a 2.1A port.
kbeezie said:
As I said, I'm using Battery Widget Monitor Pro. IF it was only the OS it would show the exact same deal with the Samsung 2.1A Charger, Nook 1A charger, HTC 1A charger. But instead on ALL chargers except the Kensington one, it shows a much higher charge rate (on the 1A around 800mA charge, on the Samsung around 1.7A charge).
But on the Kensington one never more than 500mA (usually around 300-400). I even exchanged the unit for a new one, and still the exact same behavior. I think the powerWhiz feature of the charger is detecting it not as a tablet but rather as a generic USB Device and is not providing more than 500mA for 'safe' charging. Just like how it won't charge my phone past 1A since it's detected as a SmartPhone even though it's a 2.1A port.
Click to expand...
Click to collapse
The N7 has a circuit to detect whether the USB cable is plugged into its charger or into a regular USB port. The N7's charger shorts the two data pins. If your charger doesn't short those two pins, the N7 will never go into "high charge" mode.
There is a simple mod to do. Either take the charger apart and short what the data pins should be on the usb port or short the data wires together in a cheapo usb cable at the micro usb side. That will make a charge only cable but it will give. What you need.
Sent from my SPH-D710 using xda premium
So turns out I wasn't crazy after testing two of their chargers.
Dear Karl:
Thank you for contacting Kensington Technical Support.
We understand that our Absolute Power™ 4.2 Dual Fast Charge is not charging your Nexus tablet properly, we regret to inform you that Absolute Power™ 4.2 Dual Fast Charge for Tablets is not compatible with Nexus Tablet, hence we would be glad to refund you the amount.
If the date of purchase is within 90 days, we request you to utilize the 90-days Money Back Guarantee policy.
Please click on the following link to know about the 90-days Money Back Guarantee form
http://www.kensington.com/kensington/us/us/s/1570/90-day-money-back-guarantee.aspx
We are sorry for the inconvenience caused.
If you need further assistance, please feel free to reply to this message.
For any further assistance please feel free to reply back to this email or you may want to call us on our toll-free number 1800-535-4242, Mon Fri 07:30 am to 04:30 pm PST.
Please Read This!
Kensington Technical Support incidents are only processed via our support web site, not via email. Please do NOT reply to this email, but rather you must click on the link below which will bring you to the Kensington Technical Support web portal where you can initiate questions, modify your active incidents, or perform maintenance on your support account.
Again, please do NOT respond to this incident via email, please click on the link below to access your support incident. Thank you.
http://www.kensington.com/kensington/us/us/s/1708/mystuff.aspx
Kensington Computer Products Group
Regards,
Shiva Kumar
Click to expand...
Click to collapse
graydiggy said:
There is a simple mod to do. Either take the charger apart and short what the data pins should be on the usb port or short the data wires together in a cheapo usb cable at the micro usb side. That will make a charge only cable but it will give. What you need.
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Yea... I'm not taking apart a charger. I just returned the second one to the store where I got it and got one that did work. Also that method won't work with the kensington, with it's powerwhiz feature if it can't detect the device it'll limit to 500mA for safety.
Besides I've already returned the second charger (I exchanged the first one, re-ran tests, etc), and ended up getting an RCA 4-outlet power strip/surge protector that has two USB ports (one for 2.1A charging) that does work.
All android devices look for 200ohms on the data pins to determine if it is a charge vs data source. Except the handful of proprietary connections (ex:Nook Color).
Yep. All things said in this thread are true. What I've found to work great with the stuff I already have is a Samsung Galaxy S4 charger. That thing
charges the N7 at about 1500 mA. Measured with my multimeter. It's weird though,
it'll start around 800mA and after about 45s to a minute it will start pulling in almost double that.
Crazy.
I've managed to find some chargers (both car and wall) that will charge with 1800mA (according to Galaxy Charging Lite app).
I have not managed to find an aftermarket cable that will charge at more than 1amp. Anyone know of an aftermarket cable that actually is capable of 1800mA? I've tried nGear and monoprice, and while they are very well constructed cables, they will only charge at 1amp or less with the n7100
Thanks for the help in advance, but please only respond to this if you've actually tested the cable with with the Galaxy Charging app or a current meter of some sort. I'm not interested in cables that only work anecdotally.
-PW
I'm breaking your rules (gasp) but as far as I'm aware, it's not the cable that manages the charge, it's the power adapter that feeds the usb, right? I've used all sorts of random cables on my travels for work, but always sticking to my 2+ amp output charger, and they've always worked.
pacificwing said:
I've managed to find some chargers (both car and wall) that will charge with 1800mA (according to Galaxy Charging Lite app).
I have not managed to find an aftermarket cable that will charge at more than 1amp. Anyone know of an aftermarket cable that actually is capable of 1800mA? I've tried nGear and monoprice, and while they are very well constructed cables, they will only charge at 1amp or less with the n7100
Thanks for the help in advance, but please only respond to this if you've actually tested the cable with with the Galaxy Charging app or a current meter of some sort. I'm not interested in cables that only work anecdotally.
-PW
Click to expand...
Click to collapse
Find a very short cable and you'll see rates up to 2100 ma (as measure by battery monitor widget). I use the short usb cable that came with my jambox combined with the the phones stock charger. The charger gets so hot due to the high current that I worry if it might burn out. The cable is very short, like 6 inches. I use this one when i need a quick bump before going out.
At this low of voltage plus high current, the shielding on most cables is not enough to protect against the voltage fluctuations caused by the high magnetic field. The longer the cable the more shielding is needed. Additionally, the cable shielding gets less effective as the cable gets older due to general wear. My original usb cable can only due around 740 - 1250ma, where it used to do 1800ma when new nearly 2 years ago.
If you could find a cable where there the positive and negative wires are separated in parallel strands like traditional AC power cords, it would also help. I have a cheap charger with built in cord like this and it charges consistently fast.
Jarm3r said:
I'm breaking your rules (gasp) but as far as I'm aware, it's not the cable that manages the charge, it's the power adapter that feeds the usb, right? I've used all sorts of random cables on my travels for work, but always sticking to my 2+ amp output charger, and they've always worked.
Click to expand...
Click to collapse
Most USB cables will work with the charger, but some cables (usually longer or smaller gauge wires) will restrict the charge to a lower amperage. I still haven't quite figured out how the phone knows what cable is being used, because, realistically, in a simple DC circuit, the consequence of using a cable that is too small is heating up or burning out. A cable that is too small alone will not prevent too much amperage from going through itself. This is why they invented fuses. Somehow the phone detects the gauge/length of cable being used and restricts the amperage being pulled from the charger by changing its own resistance on the circuit.
nswenson said:
Find a very short cable and you'll see rates up to 2100 ma (as measure by battery monitor widget). I use the short usb cable that came with my jambox combined with the the phones stock charger. The charger gets so hot due to the high current that I worry if it might burn out. The cable is very short, like 6 inches. I use this one when i need a quick bump before going out.
At this low of voltage plus high current, the shielding on most cables is not enough to protect against the voltage fluctuations caused by the high magnetic field. The longer the cable the more shielding is needed. Additionally, the cable shielding gets less effective as the cable gets older due to general wear. My original usb cable can only due around 740 - 1250ma, where it used to do 1800ma when new nearly 2 years ago.
If you could find a cable where there the positive and negative wires are separated in parallel strands like traditional AC power cords, it would also help. I have a cheap charger with built in cord like this and it charges consistently fast.
Click to expand...
Click to collapse
I suspect you're right. The impedance of a cable is the only thing that would change over a period of time that would result in a cable that could once pull 2A to start pulling less than that. Still, it would be nice to have a list of chargers/cables that consistently pull 2A before dropping $15-$30 on one of them. There exists such a list on this forum, but it is filled with comments like "It's good enough for me", without any real data as to what performance they are getting. Hence my rules above.
The charge rate depends on your kernal not the cable. I use Agni and get over 2 amp charges from a USB cable I paid 12 cents shipped for on eBay.
I purchased this cable about two weeks ago and it delivers!! I can charge my 9300mah Zero Lemon battery from 0-100 in just under 4 hours. Stock battery in about 1.5-2hrs. Of course I'm using a 2.1 amp charger, but NONE of my other cables come close. I'm averaging 1800-1900mah charge rate with it. Next highest rate cord only gets about 1200 max. I plan on ordering 2-3 more. $5 and change with PRIME.
2.1A Micro USB Sync & Charging Cable (1M) https://www.amazon.com/dp/B009Z94PV2/ref=cm_sw_r_udp_awd_7MD2tb08CY1N7R0J
carlz28 said:
I purchased this cable about two weeks ago and it delivers!! I can charge my 9300mah Zero Lemon battery from 0-100 in just under 4 hours. Stock battery in about 1.5-2hrs. Of course I'm using a 2.1 amp charger, but NONE of my other cables come close. I'm averaging 1800-1900mah charge rate with it. Next highest rate cord only gets about 1200 max. I plan on ordering 2-3 more. $5 and change with PRIME.
2.1A Micro USB Sync & Charging Cable (1M) https://www.amazon.com/dp/B009Z94PV2/ref=cm_sw_r_udp_awd_7MD2tb08CY1N7R0J
Click to expand...
Click to collapse
Thank you! This is exactly the type of review I was looking for!
:laugh:
Check this out. http://voyager8.blogspot.com/2013/04/how-to-choose-good-usb-data-and.htmlI found it while looking for the 6ft cable I used to use until it shorted from heavy use (bending a lot) and I got a pack of 10 short flat wire style 3ft cables. My 6ft one has a ferrite end and printed on it: 28agw/1p and 26awg/2c. It could handle 2A just fine, but this requires any wall outlet adapter that can output that amperage. The oem outlet adapter that comes with the phone says 2.0A output, but you can fine any 'reliable' one that has 2.0A output.
if the original cable is not 1800mA, there must be a reason
Get one of these
http://www.monoprice.com/Product?c_id=103&cp_id=10303&cs_id=1030307&p_id=5457&seq=1&format=2
anyone have this cable... or know if it is a 28AWG/1P + 24AWG/2C (i.e., 24AWG/2C for charging)
http://www.amazon.com/Mediabridge-U.../B004GF8TIK/ref=pd_cp_e_1/186-6092214-7798820
Hi
Hard to get something original for samsung nowadays
I have those monoprice cables but get different results every time I plug in (1698ma, 1300ma, 600ma, 460ma, etc...)
carlz28 said:
I purchased this cable about two weeks ago and it delivers!! I can charge my 9300mah Zero Lemon battery from 0-100 in just under 4 hours. Stock battery in about 1.5-2hrs. Of course I'm using a 2.1 amp charger, but NONE of my other cables come close. I'm averaging 1800-1900mah charge rate with it. Next highest rate cord only gets about 1200 max. I plan on ordering 2-3 more. $5 and change with PRIME.
2.1A Micro USB Sync & Charging Cable (1M) https://www.amazon.com/dp/B009Z94PV2/ref=cm_sw_r_udp_awd_7MD2tb08CY1N7R0J
Click to expand...
Click to collapse
Which 2.1 amp charger are you using? I have one for my car, looking for one for home use. I also have the 9300mah ZeroLemon battery in my T-Mobile Note 2. Thanks!
Asquared said:
Which 2.1 amp charger are you using? I have one for my car, looking for one for home use. I also have the 9300mah ZeroLemon battery in my T-Mobile Note 2. Thanks!
Click to expand...
Click to collapse
I was using the 2A charger that came with my Nexus tablet. But I bought an additional one for work.
iXCC ® Dual USB 4.2 Amp (20 Watt) SMART High Capacity [High Power] ... http://www.amazon.com/dp/B00HPTU0OU/ref=cm_sw_r_udp_awd_PR7.tb01EM5CB
$11.99 thru PRIME.
Had this one for almost 3 months now and it works VERY well. I get a full 1900-2000mah charge rate on the Note2 and can charge my tablet at quick speeds simultaneously.
ElDuez said:
The charge rate depends on your kernal not the cable. I use Agni and get over 2 amp charges from a USB cable I paid 12 cents shipped for on eBay.
Click to expand...
Click to collapse
some fake cable limit current.
Got similar problems as the OP. I wanted to charge my phone in my car and using the phone as a navigation device without depleting the battery (which occured a few time).
Tried several usb cables, even did some mods like shorting the white and green data wire in the cabel at the phone side, but that all didn't help.
Then i came to Kopi who sells usb cables which can deliver a full current.
http://kopi-d.com/?recent_works=553
Bought a few for 6 dollar each and am now a happy camper.
shizuku said:
Got similar problems as the OP. I wanted to charge my phone in my car and using the phone as a navigation device without depleting the battery (which occured a few time).
Tried several usb cables, even did some mods like shorting the white and green data wire in the cabel at the phone side, but that all didn't help.
Then i came to Kopi who sells usb cables which can deliver a full current.
http://kopi-d.com/?recent_works=553
Bought a few for 6 dollar each and am now a happy camper.
Click to expand...
Click to collapse
We're sorry, but there are no items available in the Micro USB (Android) category lol on the web site
linkhunter said:
We're sorry, but there are no items available in the Micro USB (Android) category lol on the web site
Click to expand...
Click to collapse
I just saw it. Why don't you email them and ask about availability? I had contact with Victor Leung ([email protected]).
Many people looking for a Power Bank which has Fast charging for there phones,
I found these & if there is any other Please do post links:
~ This has * Qualcomm Quick Charge 2.0 *
http://www.incipio.com/ces-power/quick-charge-portable-backup-battery-6000-mah.html
~ This has * Qualcomm Quick Charge 2.0 *
http://ape-battery.en.alibaba.com/p...comm_Quick_Charge_2_0_power_bank_MP5200Q.html
~ Wonder if this New Samsung Battery will have a Fast charge
http://www.sammobile.com/2015/03/02...-pack-and-new-colors-for-level-on-headphones/
~ I got this see it on YouTube VERY GOOD
iWalk Extreme TRIO 10000 Ultra-Slim Backup Battery Power Bank with LCD Display
http://www.iwalk.net/EN/battery/universal/UBO10000.html
~ This one is very different 1st of its kind i have seen
comes with a option of SD card slot, so it works as a OTG USB in 2 sizes 6000 & 8200mAh
http://www.mymili.com/Product.aspx?id=46&pid=3
~ New Style - PoP’n 2 Charger - Smart Phone & Tablet
http://www.shop.xpalpower.com/index.php?route=product/product&path=69&product_id=493#1432173854
~ BRAVEN BRV-BANK Smart, Ultra-Rugged
http://www.braven.com/outdoor-serie...-rugged-portable-backup-battery-6000-mah.html
~ Advanced power lock technology with standby time up to 6 months after fully charged.
Built in Micro Usb wire & can use the battery as a Stand
Vivis™ Knight V2 10500mAh Dual USB Portable Charger
http://www.amazon.com/Vivis-trade-K...vis™+Knight&tag=androidcentral00-20&m1k=vb_ac
~ Nice but has slow charge
PhoneSuit Flex Pocket Charger DC OUT: 5V @ 1A
Small size & Charge your Flex and Smartphone at the same time
http://www.phonesuit.com/phonesuit-flex-pocket-charger-android-smartphones
~ Good part is it claims 3A output
Power Core Ultra DC OUT: 5V @ 3A
With our Quick-Charge technology you can power your devices at the fastest rate possible, up to 3.0 Amp.
PhoneSuit Power Core Universal Battery Pack Series
~ I found this which is nice, cos it charges the 10000mAh powerbank in 95min
which is very useful and did not find other Power bank like this:
Ultrapak Fast-Charging Batteries - Products | uNu
~ Good brand & has 2.4A output
Mophie powerstation plus 2.4amp out
atleast get Up to 3x Battery
http://www.mophie.com/shop/powerstation-plus-apple-products-smartphones-tablets
~ Something different
Lepow ADD Detachable Power Bank
http://www.lepowglobal.com/products/add/
~ Coming soon -
ZAP&GO charger
https://www.zapandgocharger.com/
* * * Also want to suggest some other Stuff * * *
Xpower 2.4A Aluminium Alloy Micro USB Cable
http://www.agrade.com.hk/index.php/...inium-alloy-micro-usb-cable.html?options=cart
can also find it on Ebay
Smart & Secure Fast-Charge USB Cable and Adapter
https://www.kickstarter.com/projects/andyfei/smart-and-secure-fast-charge-usb-cable-and-adapter
K’isauve is a battery, SSD, cable in one
http://www.pkparis.com/en/prods/kisauve/
Mu Tablet White 2.4amp out
http://www.themu.co.uk/pages/mu-tablet
CHOETECH 6 Port 60W Multi USB Charger with two dedicated Quick Charge 2.0 Ports Charger with Qualcomm Technology
http://www.choetech.com/choetech-multi-6-ports-usb-charger-quick-charge-2/
Thanks for compiling this. I emailed Anker about the Astro Pro2 ad unfortunately it does not support Qualcomm Quick Charge 2.0. They said that PowerIQ is different and doesn't charge as fast. I think the only ones that will do Fast Charge are ones certified as such.
That being said, I'm in for the Aukey.
I've been looking to buy the Aukey but its unavailable from Amazon right now
is the usb cable has to be different as well? couldnt be a normal usb cable to do fast charging??
marcochapita said:
is the usb cable has to be different as well? couldnt be a normal usb cable to do fast charging??
Click to expand...
Click to collapse
i don't believe the wire has have anything to do with it.
which is faster, 9v 1.67 amps or 5v 2 amps? also, anyone come across a powerbank that has wireless charging AND fast charging?
one question that it seams i dont find in numerous searches i did, does the wall adapter from samsung lights any green light when starts to give fast charging? because i did see something similar but maybe was not the samsung wall charger.
thanks in advanced.
marcochapita said:
one question that it seams i dont find in numerous searches i did, does the wall adapter from samsung lights any green light when starts to give fast charging? because i did see something similar but maybe was not the samsung wall charger.
thanks in advanced.
Click to expand...
Click to collapse
The supplied Sammy charger no, Tenergy does have the blue (standard charge) green (quick charge) led, possibly others.
---------- Post added at 05:45 PM ---------- Previous post was at 05:39 PM ----------
I didn't want to quote the whole OP but you may want to edit this one out...
~ This has * Qualcomm Quick Charge 2.0 *
http://ape-battery.en.alibaba.com/pr...k_MP5200Q.html
...that is per 3000 unit orders.
I have a Mophie, Powerbrick XL (12,000 ah) or something or other. Not cheap but it puts out 2.4X2.4 (two usb outputs) simultaneously. As I said not cheap but telling the ol lady her phone will have to die while she watches mine charge on the airplane is simply not a place I want to visit.
marcochapita said:
is the usb cable has to be different as well? couldnt be a normal usb cable to do fast charging??
Click to expand...
Click to collapse
I believe it has to be a "charge and sync" cable. I have some charge only cables that came with small micro-USB powered devices that fail to fast charge, but a generic USB cable does. The charge-only cables don't need to pass data because the devices they came with only use them for power so it looks like you have to have the data lines intact.
I also got some nice micro-USB cables at Best Buy that have nice LED lights in them. The Pt brand one with just an LED light at the micro-USB end was able to fast charge, but got extremely hot. The other brand (Modal) that had LED lights all along the length of it failed to fast charge. I'm guessing that either the drain of all of those LEDs or the fact that they are powered by a chip on one end of the cable means that they force the USB connection to only supply the basic power. Both are going back to BB.
I found a nice USB "charge and sync" cable at Walgreens that spring coils into a housing (the round housing has a regular USB plug coming out one side and a micro USB plug coming out the other end and if you pull on them they extend equally - pull again and they retract together to lie flush with the housing). That one does fast charge. It is replacing (along with a cheap 2.4amp car charger that was almost as fast as an QC2.0 charger) an old cheap retractable car charger that I used to use on trips that failed to even keep up with the power drain of navigation on the S6edge or my S5. The retractable cable is not listed on Walgreens web site and I found it behind the photo counter in a bin of USB chargers and cables.
---------- Post added at 03:47 AM ---------- Previous post was at 03:36 AM ----------
ilordvader said:
~ This has * Qualcomm Quick Charge 2.0 *
http://www.incipio.com/ces-power/quick-charge-portable-backup-battery-6000-mah.html
Click to expand...
Click to collapse
[Comment deleted, something changed on the web site or I must have followed the wrong link and saw incorrect information...]
flarbear said:
I found a nice USB "charge and sync" cable at Walgreens that spring coils into a housing (the round housing has a regular USB plug coming out one side and a micro USB plug coming out the other end and if you pull on them they extend equally - pull again and they retract together to lie flush with the housing). That one does fast charge. It is replacing (along with a cheap 2.4amp car charger that was almost as fast as an QC2.0 charger).
Click to expand...
Click to collapse
Can you post a picture of the cable? Is there a P/N or UPC that you can post? I checked my local Walgreens and no luck finding.
blulite said:
Can you post a picture of the cable? Is there a P/N or UPC that you can post? I checked my local Walgreens and no luck finding.
Click to expand...
Click to collapse
E-filliate brand Retractable Charge & Sync Cable for Micro-USB
Model #1311653 (?)
UPC: 8 26341 02003 9
The Walgreens web site shows other E-filliate brand cables in bright colors, but not this one. It was not in the case with the other phone accessories, it was behind the photo counter in a plastic bin full of an assortment of colorful chargers and cables that looked like the kind of thing you'd find on the counter next to a checkout stand. It's only 2 feet long fully extended, but it packs nicely. Unless you are looking for something that packs away nicely without tangling, I would think you might find some nicer and cheaper cables elsewhere, although this one was only $10.
I'd buy the Anker. Can't go wrong with them.
My own issue is I have too many of them!
Got the 15Ah on sale for $30 earlier this year.
That new one is 20Ah, ridiculous capacity!
But needed on excursions with ipads, etc.
Not a big deal if it doesn't charge as fast. I'm tempted to buy it and use galaxy charge current and compare rates with the included wall charger. Of course current doesn't mean squat if we don't know what rail it's on, i.e. 1.5A at 9V is better than 2V at 5V.
EDIT: How about LUDICROUS capacity for same price as the older version?
http://www.amazon.com/dp/B00M3073L4...olid=13KBUZJF1OD23&coliid=IAR10H7EP4C2A&psc=1
marcochapita said:
is the usb cable has to be different as well? couldnt be a normal usb cable to do fast charging??
Click to expand...
Click to collapse
I have 3 different quick chargers around and none of them charge at a different rate with the different cables I have laying around except for the long cables. I use them generically between the chargers, pc, various devices.
As to the long cables (3 plus meter) charge times slow down on the few I've tried. Not huge but noticeable.
krabman said:
I have 3 different quick chargers around and none of them charge at a different rate with the different cables I have laying around except for the long cables. I use them generically between the chargers, pc, various devices.
As to the long cables (3 plus meter) charge times slow down on the few I've tried. Not huge but noticeable.
Click to expand...
Click to collapse
There are 2 things to note here. The phone will say whether or not it is fast charging and it will also show a prediction for how long it will take to get 100%. You can actually get a reasonably quick "time to full" estimate on a basic charger that supplies higher amperage, but I believe you will only get the "10 minutes for 4 hours" boost from an actual QC2.0 accessory that successfully negotiates the QC protocol with the charger. The QC2.0 protocol involves not just higher amperage, but higher voltage, which likely makes the difference for that boost.
So, when you say you have 3 different "quick chargers" around, do you mean "officially Qualcomm QuickCharge 2.0 accessories", or a charger that is higher amperage than normal and so uses the words quick and charge on the box.
Having said that, I've seen basic 2+ amp chargers that are fairly common where the phone predicts a total charge time to 100% that is very close to what I get on the adaptive charger or whenever the phone claims it is fast charging (only ever on an official QC2.0 accessory with the right cable). I think the only real difference is offering the initial boost of 4 hours for 10 minutes, but in the long run "actual QC 2.0" is not that much better than any high amperage charger for a full charge because the charge rate is not linear as the phone approaches 100%. This is the same reason why DC charging for EVs never lists the time to full because they'll get you to 50-80% in half an hour and then take another 2 hours to get you to 100%. The speed enabled by the high voltage is only an initial boost and matters little for a full charge.
The reason I would want an actual QC2.0 charger for the car or for an external battery pack is that I often jump in the car for a 10 minute trip when I'm getting low and it would be nice to get a significant charge during that time. With an external battery, having QC2.0 would mean less time having to keep the phone tethered to a brick. Otherwise, if you are only looking for a full charge then an official QC2.0 vs a high amperage charger isn't that big of a deal.
I'm an engineer. I have three qualcomm quick charge 2.0 chargers, one Oppo charger with their competing (and better ) technology, and uncounted random chargers from unknown past phones. Some more potent and some less. Yes, each of those qualcomm quick chargers will respond to the embedded controller on the phone and provide quick charging, the phone will note such when plugged in and notify to that effect. Yes, they make quick charge 2.0 car chargers and I also have one of those and yes it charges at the same rate as the 120 chargers in the house.
I'm a bit of a slut when it comes to these things.
That's great. Keep in mind that the only reason I asked is that there are plenty of packages out there that use the term "quick charge" in a generic sense and so I usually specify QC2.0 when I mean QC2.0 to differentiate.
But, back to the original question - you were indicating that all of the USB cables you have tried all seemed to charge at the same rate. I will reiterate that I have found micro USB cables that do not pass QC2.0 and the phone will back off to a nominal rate when they are used. Usually the cable is special in some way, for example:
two cables that I believe came with my Chromecast - they have one of those "ferrite core" style bulges in the wire (pictured below) and were only originally intended to provide minimal USB power to the Chromecast (no data)
a Modal LED lighted "charge and sync" cable from Best Buy - since the LEDs animate to show power flow, there are obviously some electronics in the plug/wire to sequence them, and whether or not that was the reason, they did in fact prevent QC2.0 from engaging (the phone did not show a "fast charging" status).
As such, I'd look for cables that include both "charge and sync" (most do) and I'd avoid anything active in the cable, like an LED light. Having said that, the Pt brand lighted cable (also from BB) that has just a solid white LED only at the micro USB end did seem to allow fast charging, but it got very hot so I didn't really like it in the end - but it does show that there are some non-passive USB cables that will still work with QC2.0.
Chromecast cable:
I went to a couple of Samsung shops here in Taiwan and they were out of those new chargers for fast charge. They were only selling the regular chargers from before. Salesmen also said he heard something about the new chargers causing damage to the smartphone (sensors). He was not sure he said but has heard about this issue. He could not confirm for sure said but he was pretty sure.
flarbear said:
E-filliate brand Retractable Charge & Sync Cable for Micro-USB
Model #1311653 (?)
UPC: 8 26341 02003 9
The Walgreens web site shows other E-filliate brand cables in bright colors, but not this one. It was not in the case with the other phone accessories, it was behind the photo counter in a plastic bin full of an assortment of colorful chargers and cables that looked like the kind of thing you'd find on the counter next to a checkout stand. It's only 2 feet long fully extended, but it packs nicely. Unless you are looking for something that packs away nicely without tangling, I would think you might find some nicer and cheaper cables elsewhere, although this one was only $10.
Click to expand...
Click to collapse
Frys has a large selection of retractable micro USB cables. I picked up a 2-pack of 3 foot cables yesterday and the phone indicates "fast charging" on them:
http://www.frys.com/product/6630234
Longer than the Walgreens cable and cheaper for 2 of them, but the cables on the Walgreens model seem a little beefier (which is likely why they only fit 2' of cord in the same retractable package).
I bought the Anker without reading the description well enough. :silly: It arrived and is almost the size of a Tablet! I returned it. So, don't be "underachieving Rob Lowe" and carefully READ before you buy!
ilordvader said:
Many people looking for a Power Bank which has Fast charging for there phones,
I found these & if there is any other Please do post links:
Click to expand...
Click to collapse
ShermCraig said:
I bought the Anker without reading the description well enough. :silly: It arrived and is almost the size of a Tablet! I returned it. So, don't be "underachieving Rob Lowe" and carefully READ before you buy!
Click to expand...
Click to collapse
I got the Anker E6 and it's a beastly size, but it completely charged my S6, from 5%, in ONE HOUR! I'll deal with the weight!
It's not the weight - I want pocket sized.
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