Database Develop

[Q] Standalone BAttery FAST CHARGER?

Well, I have about 3 batteries for my Optimus 2X, and I'm managing of buying another extended one (3500mAh).
I have an external standalone battery charger which is the usual crap you'll find on eBay...there's no choice , they are all the same model
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Now, the problem is that this charger, has a ridiculus current of 350 mAh +-50mAh
which is waaaaaay not enough to charge the battery in a decent time.
I mean the standard 1500mAh battery charges in something like 7-8 hours.
So the new extended one will take a full day to charge, at least this will not surprise me, considering the time it takes to charge the standard one.
So I'm searching for a wall charger that can charge batteries standalone... and that has a decent current I mean 800mAh or above.
It could be also integrated into a dock/cradle for the phone.....like the KiDiGi one (that should have a 800mAh current for the battery and 1000mAh for the phone), but it should have enough place to put an extended battery on it, which the KiDiGi one has NOT.
Hoping the community has some rabbits in the hat for me.
Thanks

http://cgi.benl.ebay.be/AC-Battery-...537522?pt=PDA_Accessories&hash=item2c5ec51db2
it says
100% brand new,High quality
External desktop battery charger,more convenience to charge your standby batteries.
Battery charger with USB:Charging stop once battery is full,Nerver overcharge keeps the performance and life of
the battery more convenience to interchange your standby batteries
Input AC:110-240V 50-60Hz 0.2A
Output:5V 800mA
Plug type:US standard

thank you for your reply but it is the same charger i already have.
That specs are the specs for the USB output.
If you look into the photo of your link, you'll see that the battery itself is charged at the usual 350mAh....
the specs are the same of my charger....sadly

I should say thx to you, it was thinking of buying 1 to charge my extended 3500mah battery I just purchased from ebay
I just got my 3500mah delivered is charging right now in my phone
looking for a charging dock to

let me know how long did it take and if it was with phone off or on, and via wall charger o USB.
I ordered mine 3 days ago...

The battery was already charged to 95%, let it charge for 2 hours to be sure it is full, deleted battery stats now it's 5 hours ago and still 86% wifi as being on all the time, mail sync every 30minuts, and lots of Tapatalk, 30minuts of gaming,
Wen battery is empty I will full charge and let you now how long it takes
Sent from my Optimus 2X using Tapatalk

i put my phone on the charger with total empty battery (3500mah) on 11PM
at 7AM wen I waked up , the phone was full charged , so full charging overnight is posibble with the original charger
don't now how long it take in total , could not see because phone was total dead wen i put it tot charge , turned phone on in the morning and battery was total full

Thank you. So it took 9 hours with phone shutted off.

Less than 9hours I was asleep so don't know exact time
Sent from my Optimus 2X using Tapatalk

Charged @1%left after 2hour 30min battery was full charged (3500mah batt) with stock lg charger
Sent from my Optimus 2X using Tapatalk

Thank you for your reports, phone was switched off, in this last case?

TheBo said:
Thank you for your reports, phone was switched off, in this last case?
Click to expand...
Click to collapse
no turned on

http://www.focalprice.com/MC312B/SEA_LG_Optrmus_2XP990_Portable_Cradle_Charger_Black.html
Quite expensive, but it outputs 1A
Good thing is that the adaptor is separate so you can use your own adaptor, maybe a 2A one.
But it looks shady cause the picture on the box doesn't look like Optimus 2X
http://www.dealextreme.com/p/dual-u...th-extra-battery-slot-for-lg-optimus-2x-73031 <-- if you're more comfortable with dealextreme
I went through the thought of getting a extra battery as well but the price and the extra stuff is just isn't worth it.
When i stop using the optimus 2x or if it dies i will have a almost useless cradle with useless batteries.
I went down the path of getting backup battery instead since i can use it on other devices. (the universal type)
http://www.dealextreme.com/p/univer...wer-port-green-white-flat-plug-110-240v-55661
EDIT: you can also get something like this but the output isn't great but you can use it for old phone battery and any battery which is 3.7V
There are a lot more like this, you can take your time to find the perfect one.

Kag said:
http://www.focalprice.com/MC312B/SEA_LG_Optrmus_2XP990_Portable_Cradle_Charger_Black.html
Quite expensive, but it outputs 1A
Good thing is that the adaptor is separate so you can use your own adaptor, maybe a 2A one.
But it looks shady cause the picture on the box doesn't look like Optimus 2X
http://www.dealextreme.com/p/dual-u...th-extra-battery-slot-for-lg-optimus-2x-73031 <-- if you're more comfortable with dealextreme
I went through the thought of getting a extra battery as well but the price and the extra stuff is just isn't worth it.
When i stop using the optimus 2x or if it dies i will have a almost useless cradle with useless batteries.
I went down the path of getting backup battery instead since i can use it on other devices. (the universal type)
http://www.dealextreme.com/p/univer...wer-port-green-white-flat-plug-110-240v-55661
EDIT: you can also get something like this but the output isn't great but you can use it for old phone battery and any battery which is 3.7V
There are a lot more like this, you can take your time to find the perfect one.
Click to expand...
Click to collapse
Thank you for your time!
Sadly none of them specifies the output current for the battery 4.2V @ xxx A
They only say that the usb port is feeded with the 5V USB spec voltage and the current of 1 A...this is the current that the phone receives and not the standalone battery. It's pretty easy to find simple wall charger to plug directly into the phone that will output 1A of current @ 5V.
The last one you linked seems to do, althought not explicited, 500mAh both on the USB 5V and on the 4.2V of the battery pins
Thank you in any case.

TheBo said:
Thank you for your time!
Sadly none of them specifies the output current for the battery 4.2V @ xxx A
They only say that the usb port is feeded with the 5V USB spec voltage and the current of 1 A...this is the current that the phone receives and not the standalone battery. It's pretty easy to find simple wall charger to plug directly into the phone that will output 1A of current @ 5V.
The last one you linked seems to do, althought not explicited, 500mAh both on the USB 5V and on the 4.2V of the battery pins
Thank you in any case.
Click to expand...
Click to collapse
Most of such device don't regulate the current, usually just the voltage.
As long as the AC to DC adaptor can provide everything will go through (meaning the output current of the adaptor will be the rating going to the battery/phone or whatever)
And how much of it is used up depends on the device drawing power.
Note: you do have to beware of some made in china adaptors as the rated specs sometimes do not match up to the actual.

remaining on topic I think this could be useful 0.8A http://www.dealextreme.com/p/0-8-lc...-car-power-adapters-for-digital-cameras-41216
Regarding the 3500mAh extended battery this is the measured capacity after ONE cicle of charging/discharging from Battery Monitor Widget
I think this could be useful in the future, I will update it if the capacity increases meanwhile I charge/discharge it...at least for the few first times this could be possible.

Battery
I think the stock one is good to have ! No need to change !

My eBay charger works fine, charge time is long yes but it charges about as long as my battery lasts did I'm never running out.
Sent from my LG-P990 using Tapatalk

pordokoftis said:
I think the stock one is good to have ! No need to change !
Click to expand...
Click to collapse
yes but it is useless regarding the focus of this topic.
We are discussing about standalone spare batteries chargers.

I think it is better to charge your 3500mah (or 2500mah?) battery using a 2amp usb adapter. Charging a lithium battery at anything 1c and below is very safe. So if you're charging 3500mah (3.5amp) battery on a 1amp charger, it's only like 0.3c which is way less. Atleast if you use a 2amp charger, you can charge your big battery around 2hrs tops. But there is no desktop charger with 2amp output though, just usb adapters, mainly for ipads.

The All-in-One Nexus 7 Charger Issues thread

Update 8/9/12:
janedoesmith did a bunch of testing with different charger and cable combinations. http://forum.xda-developers.com/showthread.php?p=29983624#post29983624
Sounds like the most common problem is just cables with micro USB connectors that are too short.
----
There are a handful of threads that are a mish mash of good and bad/non-information. The N7 charger situation is a mess and finding a charger that works well is
almost impossible. It seems the cable you use is important, too.
"Confirmed working" chargers are chargers that work at > 500mA
Confirmed working 3rd party charger/cable combos (Updated 7/30/12):
- OEM Asus charger / $25 / ~1.8A / 3' cable
- HP Touchpad charger / ~$15 / ~1.6A / 6' cable
- Blackberry 1.8A Playbook charger / 1.8A rated / $15 / 6' cable
- Asus Transformer charger model AD827M / $? / 2A / length?
- Nokia AC-10U / 1.2A / $? / 6ft integrated cable
- Blackberry 700mA charger / 700mA rated / $5 / 6' cable
-------------------------------------------------------------
airphoto has noticed the actual micro usb connector is a little longer on the OEM cable than a typical cable. This is the only confirmed physical difference we know about at the moment.
http://forum.xda-developers.com/showpost.php?p=29361415&postcount=19
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Here is my experience:
- Chargers seem to work in 3 different ways: 1) they'll charge at full capacity, 2) they'll charge but slower than they are rated, or 3) they won't charge at all (and the N7 will NOT show a charging icon) (Update: Chargers that don't show a charging icon will actually trickle charge, roughly 5% an hour)
- Shorting the data pins on a charger that doesn't charge at all (#3 above) results in NO CHANGE
- The USB cable you use is important, in what way I'm not sure. Using a cheapo cable I have with the OEM 2A charger results in my N7 charging slow, probably 350ma.
And here are the chargers I've tried with results:
- OEM charger with OEM cable: Charges from 0-100% in about 3 hours
- OEM charger with cheap cable: Charges from 0-100% in 18 hours or worse if the screen is off, drains FASTER than it charges with screen on
- Blackberry 700ma charger (integrated cable): Charges from 0-100% in about 8 hours, which is in line with what you would expect with it's output
- Cellet 1000ma charger with any cable: will not charge at all
- Cellet 1000ma charger with data pins shorted: will not charge at all
- Motorola dual charger (Razr Maxx): Same slow charge as above, about 18 hours to charge fully
In addition, I've used a handful of different brands and types of generic cables. Something is different about the OEM charger but no one (AFAIK) has been able to identify it yet. There is clearly more at play here than the rated charge rate, so if that is your only comment, please keep it out of this thread.

qoncept said:
There are a handful of threads that are a mish mash of good and bad/non-information. The N7 charger situation is a mess and finding a charger that works well is almost impossible. It seems the cable you use is important, too.
Here is my experience:
- Chargers seem to work in 3 different ways: 1) they'll charge at full capacity, 2) they'll charge but slower than they are rated, or 3) they won't charge at all (and the N7 will NOT show a charging icon)
- Shorting the data pins on a charger that doesn't charge at all (#3 above) results in NO CHANGE
- The USB cable you use is important, in what way I'm not sure. Using a cheapo cable I have with the OEM 2A charger results in my N7 charging slow, probably 350ma.
And here are the chargers I've tried with results:
- OEM charger with OEM cable: Charges from 0-100% in about 3 hours
- OEM charger with cheap cable: Charges from 0-100% in 18 hours or worse if the screen is off, drains FASTER than it charges with screen on
- Blackberry 700ma charger (integrated cable): Charges from 0-100% in about 8 hours, which is in line with what you would expect with it's output
- Cellet 1000ma charger with any cable: will not charge at all
- Cellet 1000ma charger with data pins shorted: will not charge at all
- Motorola dual charger (Razr Maxx): Same slow charge as above, about 18 hours to charge fully
In addition, I've used a handful of different brands and types of generic cables. Something is different about the OEM charger but no one (AFAIK) has been able to identify it yet. There is clearly more at play here than the rated charge rate, so if that is your only comment, please keep it out of this thread.
Click to expand...
Click to collapse
The HP Touchpad charger and cable work fine.
Jim

the blackberry 1.8a (folding blades) rapid charger works great. And I understand it's friendly with quite a range of devices. surprisingly the little Nokia 1.2a fast charer works very well. maybe a tiny bit less fast than OEM but acceptable. and can be had for around $5 bucks.

I just ordered one of the cheap USB-to-USB Galaxy Tab 10.1 adapters to test with the Nexus 7 on 2A-rated chargers which don't seem to charge at 'fast' speed.
Cheers,
Kermee

Kermee said:
I just ordered one of the cheap USB-to-USB Galaxy Tab 10.1 adapters to test with the Nexus 7 on 2A-rated chargers which don't seem to charge at 'fast' speed.
Cheers,
Kermee
Click to expand...
Click to collapse
It works fine. It's based on a standard for high amperage charging.
I made my own using a thread in the Galaxy Tab forum.

Asus Transformer charger for my TF101 uses Model AD827M charger that puts out [email protected] or [email protected] and works great. Fast and small.....
StevieJake

OEM Charger and Cable - About 1-2 hours. Its was only 3 on my first charge

I personally is having problem with OEM charger and cable not charging my N7 at all (shows 'No charge'). May be a faulty battery or something but I'll deal with google later.
Anyways, as related to your "clearly more at play", have you ever heard of the Apple charger mystery? At first people were wondering why some chargers work and some don't. Apparently, Apple chargers actually send voltage down the data line, which you would think no device would draw power on. What happens is that when the data line is at certain voltage, the i devices will read that as connect to power adapter, connect to computer, etc. Therefore, aftermarket chargers that only supply power on the usb power lines are not recognized as valid chargers.
So, with that in mind, maybe N7 is looking for the same thing in the data line coming from the charger. Maybe. And if you use a usb cable that's purely for charging, i.e. no data line at all, then it won't recognize it. Just a guess.
can't post url, but google "ladyada minty boost charge" and you'll see a result on "the mystery of apple device charging"

jmdearras said:
The HP Touchpad charger and cable work fine.
Jim
Click to expand...
Click to collapse
This. I bought a spare one form hhgreg for $10 and it works great.

I have been using the kindle fire charger because it has a long cable. 2ah and charges just as gas as the OEM 2ah charger
Sent from my HTC Sensation using xda premium

jmdearras said:
The HP Touchpad charger and cable work fine.
Jim
Click to expand...
Click to collapse
How long did it take to charge the N7 with this?

I'm having issues with my OEM charger/cable.
I used the tablet until it shut itself off. Plugged it in overnight. 9 hours later and the thing had charged 10 percent! (Tablet was off and showing charging icon, but it only moved up one tic in 9 hours)
I decided to try my Galaxy Nexus charger. About 5 hours later, I had a fully charged Nexus 7.
I'm hoping it's an issue with the OEM charger/cable, because otherwise my Nexus 7 is flawless and I don't want to do a full exchange. Hoping Google will let me swap chargers out

When I'm at my desk I use the usb cable from my Logitech k800 wireless keyboard...charges on the slow side but it does charge...also havent had any issues using it to transfer data.

Is there an app that will show the rate at which the battery is charging?
I'd like to try a few charger/cable combination I have lying around.

I haven't tried it but check this out: https://play.google.com/store/apps/...2ZXJ0aWZvcm0uYW5kcm9pZC5hcHAuYmF0dGVyeXNweSJd

qoncept said:
I haven't tried it but check this out: https://play.google.com/store/apps/...2ZXJ0aWZvcm0uYW5kcm9pZC5hcHAuYmF0dGVyeXNweSJd
Click to expand...
Click to collapse
I'm also having issues with the stock charger not charging the battery.
I'm exchanging the device tomorrow.

Just called Google up, and after a bit of back and forth, apparently I cannot get an exchange on JUST the charger. I have to RMA the entire thing, which I was hoping to avoid because the tablet itself is perfect. Oh well. My replacement order is in. I just hope there are no issues with the replacement tablet.

FYI the AT&T retail car charger (slimline, dual 2A for "phones and tablets") charges my sgs3, original gtab, etc fast but doesn't charge the n7 at all.
I haven't tested with the factory N7 cable yet, I'll do that this afternoon but I don't expect it to make a difference.

The charger issue to me seems to be the cables, the micro usb for the N7 is longer than a normal micro usb.
Sent from my Nexus S 4G using Tapatalk 2

airphoto said:
The charger issue to me seems to be the cables, the micro usb for the N7 is longer than a normal micro usb.
Sent from my Nexus S 4G using Tapatalk 2
Click to expand...
Click to collapse
Oy. Now I've seen it all. What a douchebag move.

The Only Car Charger You Need for the Nexus 7

There are so many threads on car chargers that actually work for the Nexus 7 and yet none of them seem to have reliable answers. Maybe it works, maybe not. Does it do "AC charging"? Is the amperage high enough to keep it running while I use it? Do I have to short Data+ and Data-? Does it work with OEM or aftermarket cables? Is it expensive?
It's enough to make you just want to keep the Nexus in the house. So I'm here to help - just go buy this:
http://www.amazon.com/dp/B0088U4YAG/ref=pe_175190_21431760_M3T1_SC_dp_1
Tom Fagerland was kind enough to provide links from Amazon UK, available in both black and white:
White: http://www.amazon.co.uk/PowerGen-Ch...ZY/ref=sr_1_15?ie=UTF8&qid=1351432753&sr=8-15
Black: http://www.amazon.co.uk/PowerGen-Charger-KeyBoard-Samsung-included/dp/B0088U4YAG/ref=pd_sim_ce_1
It's a 3.1A dual port car charger for $12.99 on Amazon with a full 5/5 review. I just got mine and it's well built, very sturdy (almost OEM quality) and has two USB ports, one for Apple devices "A" and one for non-Apple devices "NA". The "NA" port will charge the Nexus 7 and the "A" port will charge most other non-tablets, including the Galaxy Nexus. It works with the OEM Nexus 7 cable, a Monoprice cable and a Galaxy Nexus cable.
So that's it. Just go buy it and be happy. It will charge quickly if you leave the tablet off but will still charge it if you keep using it.
EDIT 2-11-13: This charger has been charging my Nexus 7 virtually every day (40 mins/day) for over 3 months now with no problems.
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
For those of you wanting to know some more specifics, here they are. (You don't have to care, honest! Just go buy the thing.)
I did a test with my 7 starting at 40% battery. I did a "worst case scenario" of Wi-Fi on and connected, Bluetooth on, GPS on and using Google Navigation, Spotify streaming and the screen on at 100% brightness throughout charging. I powered the adapter off a variable DC power supply that shows current draw as well as voltage. I used 12.2 VDC to simulate a car's battery. Below is the relevant portion of the battery monitor graph.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
It does indeed charge using the "NA" port with no modifications. The power supply showed an average current of 0.50A @ 12 VDC which once converted to 5 VDC is 1.22A not counting for the small loss in the DC-DC converter. It did get as high as 0.62A (1.51A @ 5VDC) but seemed to level out at 0.5A for the vast majority of charge time. (FYI I assume Watt's law applies here when stepping down voltage - feel free to correct me.)
I checked on the progress every 30 mins and here are the results:
00:00 - 40%
00:30 - 48% (+8%)
01:00 - 55% (+7%)
01:30 - 62% (+7%)
02:00 - 68% (+6%)
02:30 - 76% (+8%)
03:00 - 83% (+7%)
This is where I stopped. It seems to be very capable of providing a decent charge while under heavy use. At this point I turned everything off and waited another 30 mins and found it charged another 12% while "idle". At that rate it could charge from empty in around 4 hours. It would take around 7 hours to charge completely if being used heavily, but it's not just "maintaining" a charge or discharging slowly - it's actually gaining a charge.
So there you have it.

Powerful car chargers (2Aand above) usually affect your FM radio reception, how does that one go?

Sounds great!
I checked, and it's available on amazon.co.uk as well, here: http://www.amazon.co.uk/PowerGen-Ch...ZY/ref=sr_1_15?ie=UTF8&qid=1351432753&sr=8-15
or here: http://www.amazon.co.uk/PowerGen-Charger-KeyBoard-Samsung-included/dp/B0088U4YAG/ref=pd_sim_ce_1

What about the "A" port makes it exclusive to Apple devices only? I own zero Apple devices, so would this dual USB charger effectively be... a single one for my uses?

Troute said:
Powerful car chargers (2Aand above) usually affect your FM radio reception, how does that one go?
Click to expand...
Click to collapse
I haven't heard of that one myself, but I tried it out and it seems to have no discernible effect on FM radio reception.
JaSauders said:
What about the "A" port makes it exclusive to Apple devices only? I own zero Apple devices, so would this dual USB charger effectively be... a single one for my uses?
Click to expand...
Click to collapse
I think the "A" port does not short the two data pins because Apple doesn't like that. Most Android phones don't seem to care either way though. My Galaxy Nexus works with it, I think a friend's SGS3 works as well. A reviewer notes the Kindle products worked as well. The thing to note is that charging non-Apple devices in the "A" port will only charge them at USB speed. Not perfect but it should do the trick.

chjade84 said:
I haven't heard of that one myself, but I tried it out and it seems to have no discernible effect on FM radio reception.
I think the "A" port does not short the two data pins because Apple doesn't like that. Most Android phones don't seem to care either way though. My Galaxy Nexus works with it, I think a friend's SGS3 works as well. A reviewer notes the Kindle products worked as well. The thing to note is that charging non-Apple devices in the "A" port will only charge them at USB speed. Not perfect but it should do the trick.
Click to expand...
Click to collapse
If you are rooted and have a kernel setting to enable fast charge on USB, you should be able to use the "A" port for full power. Be sure to turn that feature off, though if you want to swap data with PC.

wtherrell said:
If you are rooted and have a kernel setting to enable fast charge on USB, you should be able to use the "A" port for full power. Be sure to turn that feature off, though if you want to swap data with PC.
Click to expand...
Click to collapse
I tried this on computer USB and the notation in Battery Monitor Widget changed from USB plugged to AC plugged when connected to my computer. milliamps went from 479 to 875. Still will see what happens on various chargers. But to get 875mA from computer's USB port seems pretty darn good.

Thanks a lot for sharing this with us! seriously there are many car chargers than would never work due to low amp!!

Bought this same charger the other day. Arrived yesterday, so far so good! Excellent value for money :good:

Good Deal On Amazon
Thank you for pointing the way about car chargers that work. I have been impressed with this charger doing more than slowing down discharge. I can actually use the larger GPS of my N7 and charge my tethering GS3 at the same time. When purchasing this charger I was offered the 3.1a/15w AC charger for 20% off. It definitely charges like the OEM one. Very happy camper.

What cord are you using with this to charge the nexus?
Sent from my SGH-I747 using xda premium

Another Option
Hey guys - there is another option that is very high quality -
The Scosche ReVIVE II works very well with the nexus 7 (at the same time as a phone too) with the 2.1A charging port. The only catch I found was that I had to short out the data connections - but I did this with a USB extension cable.
Essentially all you do is cut a USB extension cable, reconnect the power wires and then join the two data wires on the device end. This, for someone who has done some soldering, is a super easy job and takes 5 minutes, as well as making sure you don't ruin a perfectly good micro-USB charger.
The reason for shorting the Data is that some devices wont charge to their full potential (ie. only to 500mA) if they dont have the data wires shorted because the device might be connected to a computer - which wouldn't handle the full 1/2A.
anywho, it's a fantastic, very high quality charger and well worth the price.
(http://www.amazon.com/Scosche-reVIV...?s=electronics&ie=UTF8&qid=1352687110&sr=1-14)

Charging Cord
I use either my OEM GS3 or N7 for the NA port. I have a Rocketfish USB charging cord when I have to use the A port. I purchased it from BestBuy a while ago, initially for my BB at the time.

This sounds great.
I have a iPod Nano 6th Gen that I keep plugged in all the time, and a USB cable for my Phone. I modified my existing one so my Galaxy Nexus reads it as AC and charges fast, but my N7 doesn't even see it.
The one posted in the OP sounds like it'd be perfect. I could use the A for my iPod and the NA for both my N7 and GN. Fortunately the N7 doesn't require car charging very often

Sadly, Amazon.ca doesn't sell the charger and Amazon.com won't ship to Canada. Has anyone found a good source for this charger in Canada?

Croptop said:
Sadly, Amazon.ca doesn't sell the charger and Amazon . comment won't ship to Canada. Has anyone found a good source for this charger in Canada?
Click to expand...
Click to collapse
I'd love to know as well if anyone in Canada knows where to get a good dual usb car charger
Sent from my Nexus 7 using Tapatalk 2

The charger in the OP has dropped a little in price on Amazon UK.

I recently purchased said adapter...Works great and fast. 32%-72% in 25 mins on my HTC Amaze. Tablet isn't here yet

Does anyone have experience of this one? :
http://www.amazon.com/Charger-Adapt...&qid=1353451744&sr=8-6&keywords=dual+usb+3.1a
It's 3.1A and has a lower profile than the other one posted in the OP, but does it charge the Nexus 7 ok?

NickDblU said:
I'd love to know as well if anyone in Canada knows where to get a good dual usb car charger
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Same here. Looked on eBay, could only find the ones listed to work with Apple.

Charging time

I just wanted to know how long it takes to charge Note 2. Mine is on charging the entire night yet it goes to a max of 70%. Where as with hours of charging from pc usb it charges to a 100%.

Get the Galaxy Charging Current app in the play store, then check your cables. Probably bad cable. My original samsung cable was good until a couple months ago when it suddenly went from 1600 ma to 300 ma when it was charging.

Phone modify charge speed whith different cable configuration.
Your cable or connector have a problem.

It's a very simple math. Your N2 battery 3100 mAh. If you use Samsung 2A (2000 mA) charger, it will take you 3100 mAh / 2000 mA = 1.55 h to charge your phone. This is an ideal number considering phone is off (nothing else is draining your battery in parallel). Considering some efficiency factors it will be closer to 2.5 hours since you will not be able to get ideal 2A out of charger anyway. Your charger has the converter and usb cable. If you are not using original converter but rather something you got off ebay, most likely its rated a lot lower, maybe 1A or maybe even less - your charging speed will go down. Then, if you are using cheap usb cables - those might be able to handle only 500 mA of current (typical PC/laptop usb power) - slowing down even more. Plus, when you are charging your phone and you are running some cpu intense apps in the background (like GPS still on, etc.) - you could be discharging your phone at a fast rate in parallel with charging it up.
There are a lot of factors that will be contributing to slow charging speed of your phone. Typically converter and cable are the main ones.

Vectron is quite spot on. My Note 2 charges from >5% to 100% in about 2 and a half hours with the original Samsung AC adapter and USB cable if I'm not using the phone. The charge time dramatically increases if I use a low quality aftermarket cable.

I use an old 850 mA Palm charger which has a nice, thick, low resistance cable. Average time from ~10% to 100% is 3hrs.
Sent from my SPH-L900 using Tapatalk

https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
Check your charging current with the above app, my Note 2 comes with a 2A stock charger and with the stock usb cable I get average of 1800mAh which would charge my phone from 0% to 100% in about 1~2 hours, i have a few third party charger/cable too, I used the said tool to find out their charging quality.
Also if you got a third party charger, check its label, they usually have the average currents stated there, if you got a 300~460mah charger it will take a while to fully charge your Note 2.

Check your charger or cable it should take a maximum of 2 hours and half to fully charge the phone.
Sent from my GT-N7100 using XDA Premium 4 mobile app

around 2h 15 minutes from 0, charging at 1.6A

iTTi said:
I just wanted to know how long it takes to charge Note 2. Mine is on charging the entire night yet it goes to a max of 70%. Where as with hours of charging from pc usb it charges to a 100%.
Click to expand...
Click to collapse
u might want to install this " GalaxyChargingCurrent_v1.1"
to measure your cable and charger whether supply 2Amp that they should,.
anything show above 1400 then u are fine,

I have an issue charging my 7105 where it will only put through between 100-400mah (according to the Galaxy Current Lite playstore app) through causing 8+ hour charges and fast battery drain, which seemed to be the case with 4 Different MicroUSB cables and 2 chargers.
I ended up fixing this with a custom kernel and rom (beanstalk) using the cable reporting 400 and the original standard charger.
With the uNEAK Engine, I ticked "Ignore 100mA Margin" and "Ignore Unstable Power", jacking up the sliders to max, and I'm now juiced up with 1800mah, charging well within 2 hours.

mobilephone2003 said:
I have an issue charging my 7105 where it will only put through between 100-400mah (according to the Galaxy Current Lite playstore app) through causing 8+ hour charges and fast battery drain, which seemed to be the case with 4 Different MicroUSB cables and 2 chargers.
I ended up fixing this with a custom kernel and rom (beanstalk) using the cable reporting 400 and the original standard charger.
With the uNEAK Engine, I ticked "Ignore 100mA Margin" and "Ignore Unstable Power", jacking up the sliders to max, and I'm now juiced up with 1800mah, charging well within 2 hours.
Click to expand...
Click to collapse
I'm intriuged with this "Ignore unstable power" option in my kernel as well, but it has a warning saying to try at your own risk. Do you think there are any safety issues with ignoring unstable power?

vantt1 said:
I'm intriuged with this "Ignore unstable power" option in my kernel as well, but it has a warning saying to try at your own risk. Do you think there are any safety issues with ignoring unstable power?
Click to expand...
Click to collapse
I can't say there's no risk at all, but the rest of my electronics haven't blown up yet so i'm sure it's fine

mobilephone2003 said:
I can't say there's no risk at all, but the rest of my electronics haven't blown up yet so i'm sure it's fine
Click to expand...
Click to collapse
Sounds safe enough to me!

just want to share my experience : today i tried to charge my phone with LG G2 OEM charger & cable. form 10% - 100% only took amazing ~ 1 hour 20 min :good:. phone on standby, not turned off. i checked LG G2 forum on XDA about where to buy this charger, but no avail. some said they have to call LG US CS support to place order by phone. i didn't have Galaxy Charging Current apps installed when i tried LG's charger. if i can have a hold again, will update here.
here are the charger look :
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
anybody knows where to buy this ?

[REVIEW] Tenergy and Powermod Quick Charge 2.0 Chargers

A review for the following products:
Tenergy AC Wall Fast Charger with Qualcomm® Quick Charge™ 2.0 technology
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Powermod Quick Charge 2.0 Certified D/C In-Vehicle Car USB Charger
Both chargers are as fast as advertised over my stock HTC A/C charger that came with the phone and my Rockfish car charger I've been using since my HTC Vivid days.
They both came in nice retail packaging and the Powermod car charger comes with a nice (but short) USB cable. The Tenergy wall charger has an LED on it and it is blue when an non QC 2.0 device is plugged in and turns green when a QC 2.0 compliant device is plugged in. Unfortunately the car charger doesn't have this feature. It has a blue light that rings the device but only indicates that it has power. It doesn't change color when a QC 2.0 compliant device is plugged in.
I have found that both of these chargers will not charge my Asus Transformer TF201. I find this strange because I've used other USB style wall chargers with my Asus data cable (the transformer has a proprietary changing port connector) that worked just fine. Still doing research on that one but I'll not be using these to charge my tablet. I just wanted to point this out as some of these QC manufactures say they are backwards compatible with most devices. YMMV.
I've been using both for about 3 weeks and am very happy with the performance of both units.
Below is data from a series of comparison tests to show how much faster the Qualcomm QC 2.0 chargers are over stock type chargers. The data in the HTC vs. Tenergy charger is an average of 4 charges per device. The HTC vs. Tenergy temperature comparison chart is through one full charge cycle from below 20% to 100%. As you can see the QC 2.0 does charge at a higher temperature. I also took the temperature while charging on QC 2.0 with my DotView case on and at 50% the temperature on the back of the case was 91.4 F. I have taken my phone temperature after heavy gaming and the back has actually gotten hotter just playing games than at any time during the charging cycle with QC2.0. I used a IR handheld thermogun we use at work.
The Powermod and Rockfish data is from my commute to and from work that is on average 30 minutes. There are 4 charge cycles for each devise over a 30 minute period.
Conclusion:
The performance of both units is great compared to stock. Since I can already get a full day worth of battery with between 15 and 20% left after a typical day both these chargers just make life easier. If you have to go somewhere but still have 30 minutes before you leave you can "top off" your battery before leaving if you are low. Example, you realize you have less than 10% battery but have some time before you have to leave. Plug you QC 2.0 charger in and get to at least 50% in that time. I feel much better walking out the door with 50% than 10%. With the car charger you can keep your battery "topped off" between destinations. Time will tell on the longevity of the phone battery and the chargers themselves.
I hope you've found this helpful.
I recommend both of these units.:good:

Images do not work here...

OP,
Some links would be nice. I rarely ever have any issues with running out of power like you have stated. I usually charge while i'm at my desk at work all day, and when I sleep at night, and I never have had an issue with an empty battery. I'm sure some people do have trouble with that; like those who spend all day on the phone, but I'd like to see which products you are talking about, OP.
Thanks!

waynerbbx said:
OP,
Some links would be nice. I rarely ever have any issues with running out of power like you have stated. I usually charge while i'm at my desk at work all day, and when I sleep at night, and I never have had an issue with an empty battery. I'm sure some people do have trouble with that; like those who spend all day on the phone, but I'd like to see which products you are talking about, OP.
Thanks!
Click to expand...
Click to collapse
I'm pretty sure this and this is what OP has in mind, but I could be wrong.

Actually I'm not sure why my pictures are not showing up. I have my pictures set to public. I'll move them and try another location as soon as I get to work.
I see the pictures.........anyone else see them?

Pictures are working now. And holy cow..that's some impressive work Thanks for taking the time to test it all!

Thanks for the input.
I have the Tenergy wall charger and I have been pleased with the results. I will probably buy the same car charger you have next.

Glad everyone seeing the data now. I put this together because of all the questions on QC 2.0 that past few months.
BTW - I do crap like this all the time at work so it really wasn't that much work other than gathering the data. The charts etc took less than an hour to create after I had all the data I wanted.

Cheers mate!
Great data indeed
Sent using Tapatalk

abyssis said:
I'm pretty sure this and this is what OP has in mind, but I could be wrong.
Click to expand...
Click to collapse
Interesting! Thank you for sharing the links!

Thanks for your input M8!

Nice review,thanks!

I bought the car charger and it is not turning green when I plug my phone into it. Do I need to do something different?

Phrostbite said:
I bought the car charger and it is not turning green when I plug my phone into it. Do I need to do something different?
Click to expand...
Click to collapse
The car charger doesn't indicate if it's charging at QC 2.0 specs. Only the wall charger does that. The only way you can tell that the car charger is doing it's QC 2.0 is by the battery level or using an inline USB current meter that will show the charge rate.
Sorry for the confusion, I'll update my review.