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Hi all,
Can I please get some advice from someone who might know better than me. I have been using the following charger on my travels to charge an iPad and Samsung galaxy nexus at the same time:
http://www.amazon.co.uk/Skross-Char...?s=electronics&ie=UTF8&qid=1342643375&sr=1-23
I've just plugged my nexus 7 in on its own and I get nothing.
I didn't think the nexus would need a higher amp than the iPad? The Asus plug that's charging the nexus says its 2amp and the travel charger says its 6.5amp. Am I being amazingly blind or stupid here?
And if I need a new travel charger for my trips into Europe can I have some advice on what to buy before I buy something else useless.
Thanks all!
Sent from my Nexus 7 using xda premium
Nexus 7 trouble with other chargers
I see the same issue.
The Nexus 7 charger lists: Output 5.0V===2.0A, Nexus 7 will charge.
iPad 2's charger shows: Output 5.1V===2.1A;Max 10Watt, Nexus 7 will not charge,
Philips universal charger: Output 5V===2A; Max 10Watt, Nexus 7 will not charge.
Blackberry phone charger Output 5V===500mA, Nexus 7 will not charge.
Blackberry phone charger Output 5V===700mA, Nexus 7 will charge.
To answer the OP: The Amazon product page clearly states Output 5.0 VDC / 1000 mA max. N7 needs 2000 mA (2A). Derping in public again. Don't mind me. :silly:
To add to the list:
Samsung Galaxy Tab 2 7.0 Charger: Output 5V ⎓ 2A; Max 10Watt, Nexus 7 will charge.
XtremeMac IPU-IH2-11: Output 5V ⎓ 4.2A (2.1A per port); Max 20Watt, Nexus 7 will not charge. (Galaxy Tab 2 7.0 charges though.)
The N7 seems very picky about chargers, unfortunately. My XtremeMac is now powering my charge cables for my wireless mouse and keyboard, freeing up 2 USB ports, so not all is lost I guess.
I have a 2.1a car charger, but it doesn't charge it.
http://www.amazon.com/gp/product/B007TV88F2/ref=oh_details_o00_s00_i00
EDIT: Interesting. It will not work on the car charger wiht my "charging only cable" which has shorted out datapins to register as an AC source. But, it does charge on a normal USB cable.
I have a tf201 charger (here i refer to the usb block, not the cable) that seems to super charge the nexus 7, that is to say, very fast. The tf201 charger is 18 watts. Also, I have noticed my usb 2.0 ports on my desktop will not charge the n7, but my usb 3.0 ports will.
Sent from my Nexus 7 using Tapatalk 2
I started a related thread asking if anyone has examined the proprietary aspects of the charger here:
http://forum.xda-developers.com/showthread.php?t=1780211
Basically, we should be able to build (or eventually buy) some type of adapter to enable proper charging with any 2A charger after we figure out exactly what the charger is doing. I wouldn't be surprised if all Asus tablet chargers already worked properly without an adapter.
zinfinion said:
To answer the OP: The Amazon product page clearly states Output 5.0 VDC / 1000 mA max. N7 needs 2000 mA (2A).
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This answer is clouding up a lot of legitimate discussions. The current rating doesn't matter to this conversation at all. If the current is above 0 the device should show the charging icon. If not, there is some other problem.
qoncept said:
This answer is clouding up a lot of legitimate discussions. The current rating doesn't matter to this conversation at all. If the current is above 0 the device should show the charging icon. If not, there is some other problem.
Click to expand...
Click to collapse
You are correct that my remark about the OP's charger's current was not a valid point. I have stricken it from the record.
That said, some serious weirdness is going on with the N7 regardless. On the XtremeMac charger the N7 will charge. But incredibly slowly, and the battery status reads as discharging, even though the line on the battery graph is rising. I don't even know where to begin in trying to explain that.
zinfinion said:
You are correct that my remark about the OP's charger's current was not a valid point. I have stricken it from the record.
That said, some serious weirdness is going on with the N7 regardless. On the XtremeMac charger the N7 will charge. But incredibly slowly, and the battery status reads as discharging, even though the line on the battery graph is rising. I don't even know where to begin in trying to explain that.
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Agreed. I bought a pair of dual 2A chargers and neither of them will charge it at all (no charging icon). I tried shorting the data lines and still nothing. The dual charger that came with my Razr will charge it slowly (about 16 hours from 0 to 100%). My old 700ma Blackberry charger works just better than anything other than the OEM charger. Frustrating and I don't want to keep ordering different chargers with my fingers crossed.
zinfinion said:
You are correct that my remark about the OP's charger's current was not a valid point. I have stricken it from the record.
That said, some serious weirdness is going on with the N7 regardless. On the XtremeMac charger the N7 will charge. But incredibly slowly, and the battery status reads as discharging, even though the line on the battery graph is rising. I don't even know where to begin in trying to explain that.
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Click to collapse
I don't know what a XtremeMac charger is, but I'm assuming it's for charging an iphone or ipad or something? the Nexus 7 and the apple products don't share the same charger design, so the Nexus is probably only drawing 500mA while charging from it.
You can also add the MonoPrice 8856 charger to the list that do not work with Nexus 7
Mine is charging with Galaxy Nexus 5.0v 1.0A charger.
Sent from my Nexus 7 using Tapatalk 2
I have two chargers that work.
1: Nokia 1.2a fast charger
2: Blackberry 1.8a charger
both have integrated charging cables, which are 6ft in length.
The Asus transformer prime which is a USB charger with proprietary cord also has something weird. Other USB chargers with the same power specs connected with the Asus USB cable won't charge the prime. Or they charge where it literally takes like 24 hours to reach 100 percent.
There's something different in that Asus power plug on both devices it seems.
Sent from my Nexus 7 using xda premium
I'm not sure what It's output is but the standard Verizon branded micro usb charger does a great job charging my N7. I think they for sell around $30 in the VZW stores tho.
The 1.0a charger that came with my LG Revo works great, almost as fast stock. I bought 2 extra of that charger on amazon about 9months ago for under 10 for the pair.
Also the charger for my old Droid (.7a iirc) works as well, but it's slow as hell with the screen off, and barely keeps up with just web surfing.
The Charger with the HTC Desire seems to be charging - though slowly as its a 1A charger.
Does anyone know whether the International Samsung Galaxy S II charger works?
The TF101 charger works great, and fast too - about 1% a minute.
My Samsung SG2 (i777) charger seems to work with the N7
My Nexus 7's battery was dead at arrival. I'm trying to charge it up now and it's MOVING SO SLOW?
Am i the only one?
Also I tried charging with my phone's microusb cord (cuz it's WAY longer) and it wasn't charging at all? Did anybody have any luck using NON-OEM usb cords?
Its probably the cord. The Nexus 7 charger is 5 volts 2 AMPS which is higher than the usual 1 amp chargers. Just wait and see
Sent from my i777 using xda app-developers app
Mine seemed to be charging very slowly, too. On the other hand, it also drains very slowly!
What everyone else is saying plus it will go quicker after a few initial charges.
Sent from my Nexus 7 using Tapatalk 2
Bigger gas tank takes longer to fill.
Sent from my Nexus 7 using Tapatalk 2
The initial charge for me took forever... Like 7 hours almost to fully charge.
The second time I charged it, from about 40% it only took like 2 hours to fully charge
Sent from my HTC Incredible S using Tapatalk 2
Nexus 7 is apparently very finicky regarding what chargers and what cables will do the job - some of mine work (e.g. $4.74 Motorola http://www.amazon.com/gp/product/B004EYSKM8/ref=oh_details_o05_s00_i00 ) some don't (Griffin iPad charger for instance, which is a powerful charger and works for Everything else I've tried)
Along the same lines, if you have it attached to a generic car charger and are using it for GPS, the charger barely keeps up with power use.
Yes it charges slowly. Yes you have to use the charger that came with the unit.
jskahan846 said:
Along the same lines, if you have it attached to a generic car charger and are using it for GPS, the charger barely keeps up with power use.
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That's better then my SGS2 phone. I had about 20% left on it, but needed to use it as a GPS on a business trip. Plugged it into a car charger, and loaded up Navigation. The phone indicated charging, but the battery level kept dropping (albeit a little slower). By the time we got to our destination (~30mins away) I only had 7% left.
Crazy.
Would the Nexus 7 charger be OK with my Galaxy Nexus or will there be issues? I don't need two chargers at the same time.
Rik.
Sent from my Nexus 7 using Tapatalk 2
aindow said:
Would the Nexus 7 charger be OK with my Galaxy Nexus or will there be issues? I don't need two chargers at the same time.
Rik.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
I charged my Gnex with the N7 charger two nights ago, had no issues but i don't know if it is safe.
As long as the voltages are the same, and the amps are = or > than what the device needs, you should be OK. The device will only pull the amperage it needs. Voltage is what needs to be the exact (but I don't think this matter over USB, since it's all 5v - matters more with generic A/C adapters). If you don't have enough amps, it could result in slow/failed charging, but too much doesn't matter.
It seems to picky with cables. I also used a longer USB I had lying around. I left it charging for 30 minutes. I came back and it only went up 1% I switched back to the cable that came with it and it started to charge it normally.
I'm not sure why its happening but its weird
Sent from my Nexus 7 using xda premium
tricky
The nexus 7 need "compatible" usb cables, i have one that is working great and it's for usb charging only, no data .
The nexus 7 battery is 4325 Mah so a 2Amp charger will charge the battery in a little more than 2 hours (calculate the 325mah over and add the standby battery discharging when you charge it while at ON)
So the tips are:
1. Find a good 2Amp usb charger
2. Find a compatible cable, try some no data cable or maybe usb3 or again try, try try...
Awesome Tablet
I picked up a 6 ft generic Micro USB cable from Amazon for around $2, and I've been using it to charge my Nexus 7 virtually since I bought it after it launched on the Google Play store, because it's much longer than the OEM Asus cord.
The problem though, it was hard to plug in, so I filed down the bumps [on the bottom of the connector, or, on the Nexus 7, the side facing you when you plug it in--because the N7's micro usb port is up side down ] a tad bit too much so now it's a little to lose. So sometimes when I adb into it, and move it a little bit, it will lose the PC connection [but never the charging connection] intermittently.
Also, it charges fine, except when I'm playing MC3, or Bad Piggies HD. With those apps, it will say Charging, but will actually slowly discharge [slower than on battery, so apparently there's not enough power to tread water, and it sinks slightly]. It's plays HD 720P mkv files fine [with MxPlayer], and stays fully charged at 100%.
Same thing here
thevuman said:
The initial charge for me took forever... Like 7 hours almost to fully charge.
The second time I charged it, from about 40% it only took like 2 hours to fully charge
Sent from my HTC Incredible S using Tapatalk 2
Click to expand...
Click to collapse
My nexus takes about 7-8 hours to charge, and thats using the original charger that it came with. Used it now for a week without any improvement. Also my battery time with lowest backlight, gps off and so on is around 4-5 hours which feels abit low. wtf is going on?
Any usb charger should work.
The problem is the charge controler IC in the N7, it is REALLY picky with voltages.
My N7 OEM cord is a much heavier gauge then my NS or GN cord, on top of that the NS and GN cords are twice the length.
We had a really long thread on G+ about this, we even figured out the observer effect was screwing us when we had an ammeter on it.
TL;DR:
If the cord is too long or not heavy enough the N7 only pulls like 800mA (It can be less if the charger/cord is really ****, we had 300something mA with one combo)
The 2A OEM charger isn't 2A, but it's close enough.
microUSB plugs NEEDS to be 5mm or longer for them to mate in the plug properly, OEM is like 7mm
Some other crap I can't remember at 5am
So yeah, it's picky.
Use what it came with. It came with it for a reason.
Just got this in the mail from monoprice today and it's charging like a beauty.
http://www.monoprice.com/products/p...=10303&cs_id=1030307&p_id=5458&seq=1&format=2
Looks like it's back ordered now.
Sent from my Galaxy Nexus using Tapatalk 2
i bought a 3rd party 2A Car charger and it still charge my Galaxy Note 2 slow. Anyone can recommend me a good charger which u guys are using right now?
Sent from my GT-N7105 using Tapatalk 2
Mod edit
Very unlikely that will work if doing intensive stuff on the note as the charging is made for Apple products we have a long thread discussing car chargers in the Sprint forum
husain3d said:
i bought a 3rd party 2A Car charger and it still charge my Galaxy Note 2 slow. Anyone can recommend me a good charger which u guys are using right now?
Sent from my GT-N7105 using Tapatalk 2
Click to expand...
Click to collapse
This is the charger that I use. I admit that I don't charge my Note II in the car very often, but the few times I've used it, it worked well.
+1 - I use this charger and it seems to charge just as fast as my AC adapter, although I've never used the phone simultaneously as its charging. Obviously i have it plugged in to the 2A side.
This is the charger that I use. I admit that I don't charge my Note II in the car very often, but the few times I've used it, it worked well.[/QUOTE]
Very hard to beat this charger. I have a few of them to take on trips and such, in case I forget it. Fast charging... at least double to triple what I saw trying to charge off a USB port (car or PC).
Plus you can't beat the price! Just make sure it's genuine (the one on amazon is).
Just bought one of THESE 3 days ago. Works fine here.
So do any of these actually charge at 2A? Does CurrentWidget report it as 2A?
Do they significantly increase battery life while in heavy use (using satnav with screen on)?
Thanks.
artnada said:
Just bought one of THESE 3 days ago. Works fine here.
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Click to collapse
was thinking of getting one trough your link, turns out its a refferal link
Hi all,
Was just on Amazon purchasing a ZL case for my phone and saw that they now have a external battey charger available. Right now i am using the Anker Wall Charger but might consider this as either a replacement or just an additional charger. I have two ZL batteries that i switch back and forth every now and then.
Anyone have thoughts or reviews on this ZL product?
They're all the same thing and work just as well.
How long does it take to charge a zerolemon batrery from zero to full. Does it charge at 1800 Ma or 1000Ma
Sent from my SCH-I605 using xda app-developers app
I have had the battery for a couple of weeks and now got the charger... I am trying it for the first time for charging the zero lemon battery from 10% as I would be up most of the night trying to get it to the recommended 2%... hopefully I haven't screwed up my battery....
Though with moderate to heavy usage I am getting roughly a day and a half out of this battery.
I hope this charger lives up to the manufacturer hype as it takes over 12 hours to charge this battery using the samsung plug and cable that came with my note 2...
I do hope this ends up being money well spent for the whole lot of the battery, charger, and case.
tl;dr about 30% charge in 30 minutes, so not as good as DASH (it was never going to be) but a fairly reasonable charger for in your car, which is cheaper and can charge more than just your phone.
https://www.amazon.co.uk/gp/product/B01IR27AGE
Jono