yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Accessories] NoNeedForMonkeys:
This may be a software bug ..

Gentlemen,

I have been testing different chargers with the two different USB cables, and what I am finding is the tablet is in fact charging even when the battery icon does not show that I am plugged in.

Using the Nexus 7 OEM cable here are my results:

1. OEM Nexus 7 charger @2A = shows proper icon and charges tablet within a few hours.

2. Belkin charger @ 1.8A = no icon but charges tablet in just over three hours.

3. HTC charger @ 1A = no icon but does indeed charge (was too impatient to let charge complete, but gained 25% charge in two hours).

4. Samsung charger @ 0.8A = shows proper icon and charges (one hour gave 11% charge).

5. No name car charger @ 2A = shows proper icon and charges.

Using Samsung OEM usb cable (came with my SGS2 i777):

1. OEM Nexus 7 charger @2A = no icon but does show charge by battery percentage (went from 75% to 100% in about 45min).

2. Belkin charger @1.8A = shows icon and charges

3. HTC charger @1A = no icon but charges by battery percentage

In all cases, I show the battery as charging when reading battery percentage, although the battery icon in the notifications bar is not consistent. Yes there are likely background checks being made by the hardware for resistance, voltage, and current. The issue is that the icon should always indicate when there is a charge source applied; even if the source can only trickle-charge.

-thank you for letting me share some of my findings

-happy gadgetry to all :)

***Update (8/1/2012)*** when I turn the device off, all cords and charge sources register as charging.
[Nexus 7 Accessories] Kermee:
This works: USB Power Adapter for Samsung P1000 if you have a charger/cable combination that doesn't work.

Just make sure the charger you're using is rated for 2.1A; Not responsible for fires if you're overdrawing current from a lower-rated charger.

Cheers,

Kermee
[Nexus 7 Accessories] el56:
I found a similar adapter over at eBay; it's a little more expensive but looks slightly smaller and claims to ship right away.

I notice that the iPad also draws 2.1A from its USB chargers. Is it reasonable to assume that any USB charger (or external battery) claiming to provide sufficient charging power for an iPad should work with an N7?
[Nexus 7 Accessories] qoncept:
USB is a standard. If a USB can't charge a tablet it's an issue. Go away.
[Nexus 7 Accessories] dSayonarab:
No, Apple's signalling is incompatible with basically everything - a 2.1A Apple iPad charger will only put out 500mAh for anything non-Apple. Unless it expressly claims to work with tablets from Asus, RIM, Samsung et al. avoid it.
[Nexus 7 Accessories] Kermee:
I just tested the P1000 USB adapter on a 10W Apple iPad USB charger with both the included microUSB cable that came with the N7 and a 'generic' one from Monoprice.

Before, neither cables would charge with the 10W Apple iPad USB charger.

With the P1000 USB charging adapter, both cables work now and shows 'Charging (AC)' in the kernel.

Unfortunately, I have no way definitive way of telling if it's charging at 2.1A or 500mA, but it's charging pretty quickly.

Cheers,

Kermee
[Nexus 7 Accessories] lanwarrior:
Download Current Widget and it'll show you the charging amp.
[Nexus 7 Accessories] tnyankee:
For me, current widget shows other data, but "no data" for current, even when battery icon shows charging.
[Nexus 7 Accessories] kpjimmy:
Is there an app to measure something like that? LOL All I care that it works lol. But I think it works just as fast as OEM. It is USB 2.0 capable, not sure if that's relevant.
[Nexus 7 Accessories] lanwarrior:
Probably the app haven't been updated for JB. A lot of apps that worked in ICS "broke" in JB. Even apps that don't require special permission, like EasyMoney. I am kinda ticked off with Google for doing so.
[Nexus 7 Accessories] w0mbl3:
The OEM cable for the nook color charger also has a longer than stock connector on it.

Anyone with an n7 and a nook able to compare and try the nook charger? I don't have an n7 yet local store is sold out :rolleyes:
[Nexus 7 Accessories] tnyankee:
My OEM Nook Color cable doesn't light up, or indicate charging 7, while on the Nexus OEM charger. It was the first extra cable I tried.
[Nexus 7 Accessories] lanwarrior:
I found out that Battery Monitor Widget DOES show the amp.

With N7 own charger, its putting out 1600mA. Kinda expected for a 2 amp charger.

On my note I get 700-800mA with Samsung charger. With cheap charger, I got 500mA.
[Nexus 7 Accessories] lanwarrior:
I got the HP Touchpad charger from a sale ($5 with free shipping). Its a 2A charger with long cable.

Tested both the HP charger and cable and it DOES charge the N7 at 1200-1600mA.

I am kinda happy because the HP charger have a much longer cable than the default N7 cable.
[Nexus 7 Accessories] plcdude:
Charging but not showing as charging

Hello all,

I have been experimenting with my various chargers. One huge thing that I have discovered with my mobile chargers and external battery charger is that the Nexus 7 is actually charging even though all indicators suggest it is not charging.

I do not know why the Nexus 7 is not indicating it is charging but it is definitely charging even though it doesn't say charging. Very weird.
[Nexus 7 Accessories] nevertheless:
I had this happen when I used an LG charger in a Samsung Nexus S. It charged but there were no on screen indications that it was working.
[Nexus 7 Accessories] Se7enLC:
I have access to a current testing jig that I assembled, and I've been testing what current is being drawn by various chargers with the Samsung Galaxy Nexus and the Asus Nexus 7 tablet. So far the Tablet can only draw > 1A using the stock charger - and it can do so using non-stock cables.

Using other chargers so far will only result in the Nexus drawing around 400mA and not reporting that it is charging at all.

If anyone has any suggestions, I am willing to wire them up and test them. Please don't just suggest a brand name / model of charger that works - I need to know what the spec is that makes it work! :)
[Nexus 7 Accessories] hullbay:
Interesting...
[Nexus 7 Accessories] qoncept:
Updated (quickly) the original post. If I'm missing anything please let me know.
[Nexus 7 Accessories] BenMGP:
I wonder if all these issues have anything to do with kernels, roms, or root.

I was charging with OEM charger and cable with no issues until I flashed a ROM and kernel. Not sure if it is coincidence or not, but I am now experiencing charging issues.

I currently have the OEM cable charging via USB with the tablet off to try to get her charged. OEM charger is at home right now.
[Nexus 7 Accessories] qoncept:
Pretty sure it's a coincidence. I'm on the stock rom and kernel and was having enough trouble to start this thread.
[Nexus 7 Accessories] BenMGP:
Yep. Think it was the cable I was using. It is charging fine on the OEM cable via laptop USB.
[Nexus 7 Accessories] nutley:
I find that mine charges faster when switched on. I've charged with my tv usb port using the original cable and a nokia cable, seems to make no difference but being switched on makes a huge difference. Charged with a random usb cable from my pc today and it charged as fast as the tv does. Charged using a 2.1 amp car charger designed for the ipad and it was slow using the original cable
[Nexus 7 Accessories] nevertheless:
the blackberry 1.8a charger has a 6ft integrated cable.

might want to add the Nokia AC-10U 1.2a charger with 6ft integrated cable. It charges the N7 very well.
[Nexus 7 Accessories] Big_Ted:
Also working fine

Archos G9 charger and lead

Motorola Ecomoto phone charger that can with my Motorola Wilder
[Nexus 7 Accessories] pworm14:
At home I use the stock charger and cable.

At work I use a BlackBerry cable and plug it into a USB port on the side of my desktop monitor. I don't know what the output amps are on the monitor port, but the charge icon comes on on the Nexus 7 when using this setup. Seems to charge pretty fast too.
[Nexus 7 Accessories] Mike Fitz:
Got a couple chargers today that work:

CrazyOnDigital Dual Car Charger DC Adapter with dual USB Cable fits Google Nexus 7 (Black)

Plugged in with the built in cable goes to "Charging (AC)". A little wobbly in the outlet, but the nice thing is even after plugging in your N7 you still have an available 2A and 1A USB port for your phone, etc. Not great is that the ports and labels stay lit blue all the time if plugged into an always on outlet. At least you can find the right port easily in the dark. Just for kicks tried the 2A port and it does not charge the N7 with the cable I used (fixed end retractable). Not a big deal since the built in cable works fine and you can use the other ports for something else.

Also got this wall charger:

CrazyOnDigital Home Wall Charger For Google Nexus 7 (Black)

Plugged in with the built in cable also goes to "Charging (AC)". Has a USB port in addition to the built in cable for another device. Kinda strange, the USB port is on the inside of the built in cable rather than outside so it makes plugging another device in a little more difficult. Has a red light on the wall wort to show it's plugged in.
[Nexus 7 Accessories] TidBit:
Duracell 3 in 1 Charger does not work with Google Nexus. I just bought this ($12) an it does not charge the N7.

It does have the Micro USB Cable, Mini USB, and iPod connector.
[Nexus 7 Accessories] staplebox:
Didn't read the thread so this may be old news but...

I can confirm that the New Trent IMP500 will charge the N7 with the retractable USB cord and USB to micro USB adapter that came with it. System status shows AC charging.

It does NOT work with the N7s own cable or a generic cable. That same generic cable however, will charge the N7 with the N7 wall adapter. The New Trent retractable cable will work with the N7 wall adapter.

Go figure.
[Nexus 7 Accessories] Demented-Idiot:
i fully drained my tablet last night and left it off whilst charging (it showed the charging picture on screen for maybe a minute then went off)

7 hours later its only 25% done

If i switch the tab on and use the same OEM charger/cable that came with it (The same one used for overnight charging) and it is charging a lot faster.
[Nexus 7 Accessories] qoncept:
Are they actually charging at 2A (or close) ?
[Nexus 7 Accessories] Mike Fitz:
I'm not sure, don't have an app that tells me what they're actually charging at. Any recommendations on something that works with the N7 that tells you what current is being drawn from the charger?
[Nexus 7 Accessories] lanwarrior:
Battery Monitor Widget - it'll show the Amperage.
[Nexus 7 Accessories] qoncept:
Yep, or you can just watch how quickly it charges. It'll either be awful (18 hours+ to charge) or reasonable.. that's all I'm really looking for. :)
[Nexus 7 Accessories] 99RedB:
There is more than one named that way - which particular one are you referring to?
[Nexus 7 Accessories] Dbr31:
I was able to modify a usb cable to resolve the charging issue when using my battery-based charger. What I did was cut the d+/d- leads in a spare cable and solder a 180 ohm resistor across them in the leads going toward the Nexus 7 (micro USB).

Dave
[Nexus 7 Accessories] krelvinaz:
Blackberry Folding Blade Charger for Playbook - Charger - Retail Packaging - Black

Blackberry Folding Blade Charger for Playbook - Charger - Retail Packaging - Black

Link: http://www.amazon.com/gp/product/B004OZMWUS

Okay, this just walked in the door. Been waiting for it.

This is a "travel" charger with a long 6FT MicroUSB connector that is rated at 5V-1.8A.

It does charge the Nexus 7 and provides what the Nexus calls AC Charge.

I especially like the long thicker cable it has which is attached to the charger (does not remove). This also doesn't have multiple heads, just US blade style plugin that folds into the small brick.

The OEM charger has a much shorter cable and it is easy if you are not careful to either pull it out of the USB socket of the chager or more commonly, pull the charger out of the wall because it is not long enough.

I've included some snap shots showing it charging on the Nexus which I will attach shortly.

This was $16.40 and included under Prime Shipping. I'm going to get a few more since they also work well for my HTC Rezound and the docks that I got for it.
[Nexus 7 Accessories] Mike Fitz:
Seems like most chargers with an attached micro USB cable work just fine, it's the ones with USB ports for a separate cable that are hit and miss (mostly miss).
[Nexus 7 Accessories] lanwarrior:
This one;

https://play.google.com/store/apps/details?id=ccc71.bmw
[Nexus 7 Accessories] InfamousDX:
Response from Scosche Industries

As someone in another thread has suggested, the Nexus 7 requires a different register... sucks. Here is the email response I just received from Scosche:
[Nexus 7 Accessories] el56:
Google infers any 2A charger should work

"A different resistor"... not so sure about that, unless Scoshe simply meant the component change that allows the unit to deliver a 2A charge.

The official word from Google tech support is to simply ensure that the USB charger is rated at 2A:

That sounds close to what many people here are running into. Standard USB chargers might work but are iffy, higher powered ones are recommended. But I don't read anything in Google's comment above that suggests there's anything proprietary or unique about the circuitry.

(My Sony/Ericsson .7A charger -- that came with my old X10 -- shows up as charging.... not that fast, but it does charge.)
[Nexus 7 Accessories] Mike Fitz:
I installed Battery Monitor Widget to try and get an idea of what mAh various chargers were pushing to the N7 but am having a hard time understanding what's going on. Only tried getting a good reading on the OEM charger/cable combo so far and am about to give up. I didn't do anything on the calibration settings like add the mAh for the charger as I want to try different chargers, not sure if this is screwing up the readings or maybe I'm not looking in the right spot?.

Let the N7 battery get down to 95%

Plugged it back with BMW open to the main screen

After a couple minutes still showing "Discharging" and "AC Plugged", it went to Estimated - +six hundred something or other and showed as charging

When it hit 97% it changed to "Estimated +1294mA"

At 98% it went down to "Estimated +862mA"

Stayed there through 99%

At 100% it went to "Estimated +752mA" then continued dropping bit by bit down to +5mA

I'm not sure if it just wasn't discharged enough to get an accurate reading, or if it only charges at 1.3A or why it dropped when it got to 98%.

Since it stays plugged in most of the time it takes forever to discharge (not a bad thing) but there's got to be an easier way to get an accurate and quick measure of what it's actually charging at.
[Nexus 7 Accessories] RedWingsFan:
if anyone is looking to extend the short cable provided with the stock charger, i purchased the 6 foot usb extension at the link below. I tested today and with the stock cable attached to it, it charges at the same rate as the stock cable alone.

http://www.amazon.com/gp/product/B001MSU1FS/ref=oh_details_o01_s00_i00
[Nexus 7 Accessories] AraDreamer:
Okay, this may sound like a dumb question, but has anyone tried plugging the OEM charger into a dc to AC car adapter (y'know, for plugging in stuff that doesn't come with a mobile charger)? Because if those work and all I have to do is plug my OEM charger into my DC-AC converter and it'll get an AC charge, that would be perfect. (Not to mention many of them have extra USB ports or extra ac outlets)

Sorry would test, but mine doesn't get in until (hopefully) tomorrow.

-Ara
[Nexus 7 Accessories] RedWingsFan:
I don't see why your plan wouldn't work. The problem seems to be from the charger, cable, or combination of the two and not where the power is coming from.
[Nexus 7 Accessories] arrjaytea:
We just bought our first home and have been placing a huge priority on cable management, so we purchased a couple of these for the outlets near our nightstands (installed USB outlets directly in the office):

GE 2-Outlet In Wall with Surge Protector USB 2.0a

*Note: I realize on the product page it says nothing about USB 2.0a blah-blah-blah, but in store, and on the packaging it definitely does. "Compatible with iPad, they say!

Long story short, it does not work with the Nexus 7 using the USB cable that came with the device. Thankfully there are two regular outlets so having a charger there is still a non-issue, just didn't want anyone else spending money unnecessarily.

It does charge on the hard wired wall outlets, but I can't for the life of me recall which brand we purchased. Just tried one of the versions HD carried and it worked well.
[Nexus 7 Accessories] qoncept:
Did you try with the oem cable?
[Nexus 7 Accessories] el56:
NOTE; There is a HUGE difference between USB version 2 and a USB port that outputs 2A (amps).

Sorry you wasted your money.... but if the specs do not explicitly state that at least one of the USB ports can output 2 amps, it will likely have problems charging an N7.
[Nexus 7 Accessories] arrjaytea:
Yes. Only cable I tried.

I'll take a shot of the packaging tonight, but I'm pretty certain the models we bought stated explicitly they output 2a. Apologies for the confusing description, but I'm fairly sure the one linked at HD may not even be the exact model we purchased. There were three tiers, all looked identical, each pretty explicitly describing the devices they would charge as well.

I am, however, obviously open to the notion that we made a mistake - which really wouldn't be too bad, as we still have working USB outlets for the iPad, iPod, and both cell phones arranged pretty tidily, and at least the outlet works just fine for the N7, so really all fine.

Still, someday I'll redo the whole house w/ USB outlets. :)
[Nexus 7 Accessories] djkinetic:
So someone tell me why Asus makes the worst USB cables, my prime cable broke after a couple months, now, my nexus 7 micro usb end is borked, i accidentally knocked the n7 off my table, and it fell all of 1 foot i pick it up and notice the micro usb portion of the cable had almost snapped right off, just ordered the media bridge cable from amazon hope it works...ugh asus make sturdier cables plz.
[Nexus 7 Accessories] el56:
Having too much time on my hands (or looking for a diversion from what I really need to be doing :angel: ) I went to the GE website and found three models: 14461, 14912 and 14482.

Of the three, 14481 stated right on the front that its charging is 1000mA (1amp) though it's unclear if that's split between the two ports or can be combined to charge a single port at 1A. The specs for the other two simply state "standard" USB ports, and the standard is 500mA (0.5A).

If you have a different model number, you may have better luck ... that's all I could find at the GE site. The one in the Home Depot link you gave was 14912.

Good luck!
[Nexus 7 Accessories] nevertheless:
couldn't find any specs on that GE charger, which is usually bad news. would be surprised if they output any more than 1a per. But if it is a 2a charger, great find.
[Nexus 7 Accessories] biggiestuff:
My phillips fidelio audio dock pushes 2A from the primary dock and the usb port and neither can charge the nexus 7. THere has to be something other than just needing 2A
[Nexus 7 Accessories] el56:
Yeah... it can't be "tailored" for the quirks of iPad charging :p

If it's specifically "iPad compatible" it will step down to 500mA for the N7 or others Samsung/Asus/etc devices
[Nexus 7 Accessories] DamienChaos:
Samsung 1A Galaxy Nexus Charger Works

Hi all,

I just wanted to confirm that I've had no problems charging the N7 using the little 1A Samsung charger I use for my Galaxy Nexus (Link). In fact, I haven't even used the charger that came with the N7 yet.

Typically, when the N7's battery is low, I just plug it into that charger when I leave for work and unplug it when I get home...so, unfortunately, I'm not really sure how quickly it charges. However, I can confirm that it does charge without issue.

Also, if it matters, the micro-USB cable I'm using with the charger isn't the OEM one from Samsung, but rather a 6ft cable from Monoprice.com.

--DC
[Nexus 7 Accessories] k1w33d:
Scosche Dual 2.1A USB Car Charger (4.2A)

Anyone have any idea if this charger would work? I read that their wall charger works.
[Nexus 7 Accessories] djkinetic:
Just got my Mediabridge 6 ft cable it works perfectly and is worlds better constructed than the included stock one.
[Nexus 7 Accessories] RedWingsFan:
Is this the extension cable or a complete replacement?
[Nexus 7 Accessories] djkinetic:
Complete cable replacement, and works just like the OEM with the OEM Asus charger, its a lot sturdier then the stock cable and twice as long, thats another thing that bothered me about the stock OEM one. Link to the cable is here:

http://www.amazon.com/Mediabridge-A...16&sr=8-1&keywords=mediabridge+usb+micro+6+ft
[Nexus 7 Accessories] RedWingsFan:
Thanks. I have the Mediabridge 6ft extension USB cable to use with many different cables (iPad, Nexus, Phone, etc..) and they are built well. Going to order one of these for sure.

---------- Post added at 01:51 PM ---------- Previous post was at 01:49 PM ----------

And what is it with some of these manufacturers sending such short charging cables with their devices. who wants to sit 2 ft from a plug when battery is low.

If I were a manufacturer, I would send a 2-3ft cable and also a 6-10ft cable with every device.
[Nexus 7 Accessories] djkinetic:
Exactly...the stock one was ridiculously short, couldnt use the tab while it was charging on AC cause it was so short...I wish mediabridge made a cable for my Prime lol.
[Nexus 7 Accessories] RedWingsFan:
What kind of cable does the Prime use?

---------- Post added at 02:00 PM ---------- Previous post was at 01:58 PM ----------

I see the Prime uses a proprietary cable. If it is like the N7 cable where it plugs in to a USB charger, then just buy the mediabridge extenstion

http://www.amazon.com/Mediabridge-H...775&sr=1-1&keywords=mediabridge+6ft+extension
[Nexus 7 Accessories] djkinetic:
Unfortunately its proprietary...my issue isn't so much the length with that particular cable...its just the casing for the usb plug portion flimsily constructed so while pulling it out of the USB port u can pull off the casing exposing the joint where the wire and connector meet. I suppose I could use the extension tho to solve that.
[Nexus 7 Accessories] grizzly660fan:
CrazyOnDigital Home Wall Charger for Google Nexus 7

My ASUS wall adapter died so I have been in search of a replacement wall charger, I found this "CrazyOnDigital Home Wall Charger for Google Nexus 7" and it arrived today, wanted to report it works with the Nexus 7.

Can be found on Amazon which is where I purchased it from. I am to junior a member to post links (sorry).
[Nexus 7 Accessories] Mike Fitz:
It does not work with most USB cables, including OEM. The only I found it works with is the interchangeable tip retractable cable that came with my New Trent battery pack.
[Nexus 7 Accessories] adit9989:
My tests:

- Does not work (at least does not show that it charges) with a 3rd party 2.1 A wall adapter.

- Does not work with a 2.1A or 1 A cigarete adapter.

I also tested with an adapter for a Logitech remote.It does not work. However the remote charges with Nexus adapter (it does not charge with any other adapter including USB port from PC). With any other adapter Logitech remote asks "insert batteries". With it's original adapter and NExus one it start charging.

- it Works with a Samsung wall adapter for an old phone rated 0.7 A 5V (it shows AC charging).Shows charging (AC) on home screen and in Battery monitor with that adapter.