Nexus 7 Doesn't Work With Third Party Chargers? - Nexus 7 (2013) Q&A

For some reason my new nexus 7 only works with the oem charger not my Galaxy S4 charger or other chargers. Anyone else have these issues?
Sent from my Nexus 7 using Tapatalk 2

Make sure it's the correct voltage and amperage. The oem charger spits out something like 1.3A. A lot of usb phone chargers output less than 1a
Sent from my Nexus 7 using xda app-developers app

my S4 charger works

S2 charger works also.

As does the S3 and N7 Gen1.
So long as it's 1A or greater it'll work at about the same charge rate (1A = slower, and anything over 1.35A won't charge much faster).

I invested in this a while back...best charger I own....
http://www.amazon.com/gp/product/B00BFQ9R0W/ref=wms_ohs_product?ie=UTF8&psc=1

I tried it on my Anker portable battery and it charged fine
Sent from my Nexus 7 using Tapatalk 2

It didn't work on a charger I had that had a "special" cable that only provided power and ground. When I used a normal USB cable, it worked fine, so it apparently wan't to see something more than just an open connection on the data lines before it will charge.

Its worked on any charger I threw at it including the iPad charger with a HTC cable. Wireless charging also works great with the Nokia one.
Sent from my Nexus 7 using Tapatalk 4 Beta

Works fine with my BB Playbook charger.

Obveron said:
Works fine with my BB Playbook charger.
Click to expand...
Click to collapse
Anyone tried using the Apple 12W 2.4 apm charger?
Is it ok to use more powerful charger than the one it ships with?

More capacity charger won't be a "problem" as the device determines how much power to pull. Lesser capacity charges can sometimes overheat if not designed well.
Often devices capable of charging faster will only go into that mode if they detect the charger is capable of doing so. Since the way they determine this is not standardized, sometime high capacity charger charge slowly. This could be caused by something on the charger side, or even the cable being used.
Worse case of using a higher capacity charger is it won't charge at all, but that is pretty rare. Often it will charge, either at a slow or fast rate.

Related

[Q] Fast charging

I'm running the Galaxy Nexus with the extended battery. Curious if I could use a more powerful charger to charge faster.
The charger that came with the phone is a 5W (5V, 1000mA). Could I use an iPad 2 charger (10W) to charge up the nexus faster? Any experience with this?
I am pretty sure the phone regulates how fast it can charge. Some chargers that are only recognized as USB will charge slower than a recognized 'phone' charger. I experienced this with my fascinate when using a kindle charger. Using the more powerful iPad charger will almost certainly not charge your phone faster (because the phone probably allows a maximum charging input consistent with the dedicated 5w phone chargers), and may even charge slower as it is recognized as a USB power source and not a dedicated phone charger.
Which battery are u using the 2100 mah?
Sent from my Galaxy Nexus using XDA App
Yeah, I'm using the extended battery (2100 mAh). But the question could be asked of either battery (1850 mAh or 2100 mAh).
tanner.jon said:
Yeah, I'm using the extended battery (2100 mAh). But the question could be asked of either battery (1850 mAh or 2100 mAh).
Click to expand...
Click to collapse
Yea of course I was just saying that it doesnt seem worth it to me to get the 2100mah over the 1850 as u really won't be able to tell a huge difference in battery longevity unless u use the 3500 mah which is what I'm waiting for ever so patiently.
Sent from my Galaxy Nexus using XDA App
Is there a way in ICS at the Galaxy Nexus to see if the Phone is in "USB" or "Charger" charging mode?
On my old Nexus One it showed in the preferences in system information which mode it is using for charging.
Or maybe see the actual mA instead of the mode would be ok too.
I don't have the extended battery, but I know if I charge my nexus with my playbook charger,its way faster than the charger that came with the phone... The iPad charger should charge your battery faster without damaging the phone or the battery.
Sent from my Galaxy Nexus
I wouldn't recommend the ipad2 charger.. used my gfs iPad charger the other day when I was in a pinch.. woke up to the phone burning hot..
Also it didn't charge fully after being on it for 7 hours.. go figure
Sent from my Galaxy Nexus using xda premium
rudoe said:
Is there a way in ICS at the Galaxy Nexus to see if the Phone is in "USB" or "Charger" charging mode?
On my old Nexus One it showed in the preferences in system information which mode it is using for charging.
Or maybe see the actual mA instead of the mode would be ok too.
Click to expand...
Click to collapse
On my stock 4.0.2, Settings->About Phone->Status. Battery Status will show either AC or USB I think in parentheses. My phone is fully charged right now so I can't remember the exact wording.
---------- Post added at 12:30 PM ---------- Previous post was at 12:18 PM ----------
joshnichols189 said:
I wouldn't recommend the ipad2 charger.. used my gfs iPad charger the other day when I was in a pinch.. woke up to the phone burning hot..
Also it didn't charge fully after being on it for 7 hours.. go figure
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
I use the iGo MicroJuice 2.1A Dual USB Auto Charger in my car with a generic micro USB charging cable. I had problems initially with my N1 using a data USB cable as it always "slow" charged and showed USB charging in the System Settings. With a charge only (data pins shorted I believe) cable, this USB adapter charges both my GN and my N1 as an AC source.
Remember that amperage is equivalent to water flow if analogies help. If the consumer can't or won't draw more current than the source can provide, amperage drops. So, plugging in a fully charged device where the device has shut off the charging circuit, an ammeter will show 0A.
Another consideration is that an AC USB charger is typically plugged into a source of 15-20A. There is no way that it is pulling that kind of current, hence, the connected ammeter would only show the real-time draw. The 2.1A car charger that I have is only the rated potential current. One of these days I'm going to strip down a USB charging cable and connect an ammeter and shoot a video of the phone charging from 0% to 100% displaying the ammeter and an application like Where's My Droid Power.
Sorry for the pontification...

Efficient enough car charger.

Hi guys.
I have a problem finding good car charger for my phone while in car.
I either use sygic sat nav or Google maps but on top of that I stream music either via Google music or di.fm app.
Problem starts when I start streaming. My battery slowly drops down about 1% per 15min. I've tried various car chargers that have either 1amp, 2.1 amp and even dual 3.5amp they don't do the job. Only my HTC 1amp charger manages to hold the charge but it doesn't charge on top of that.
Any ideas and suggestions?
Sent from my Galaxy Nexus using xda premium
I bought the car charger from Amazon HERE earlier this year and it has worked out awesome. I usually leave it in my car but also makes a great wall charger for when you need it in a pinch and didnt bring your own. Its 17 (I got free shipping since I have Amazon Prime) and well worth it since I dont think I ever have to buy another car charger again for any device I own. Even charges my tablet.
Genuine Motorola rapid car charger, simply the best. Charges like a wall charger, seriously, phone says it's plugged into AC power
No other charger I have used, has allowed to use Google navigation and still quickly charge my galaxy nexus
Rellikzephyr
Sent from my Galaxy Nexus using Tapatalk 2
In some roms like Slim ICS you can make the USB charge as fast as a wall charger!
I use a rocketfish 1a charger from bestbuy and it charges while using navigation and streaming.
Sent from my Galaxy Nexus using Tapatalk 2
I use a 1A HTC charger and never had any issues. Are you sure your cigarette lighter is working properly? It sounds like all of these chargers you've tried are charging at less than 1A.
I think 1 amp is about all it will do. It will have a hard time keeping up if you are using it a lot. I have the htc car charger and it seems to keep up for me but actually getting a decent charge while using it will be hard.
Sent from my Galaxy Nexus using xda premium
not all 1a chargers actually charge at 1a. it depends on if the two middle pins are shorted together or not.
this charger is cheap as hell - 3 bucks - and charges at a full 1a. i use it and it works perfectly.
http://www.amazon.com/HTC-T-Mobile-...631519&sr=1-1&keywords=htc+mytouch+3g+charger
I noticed this too, using a Kensington USB charger in the car. On my drive out to Phoenix, I noticed that having Navigation running while plugged in caused the battery to drain.
I also noticed that running Torque sucks the battery down as well. I stopped at a gas station that had a ton of gadgets, so I bought another off-brand USB adapter that stated its output is 1.5A. I also picked up the OEM extended battery at a VZW store while out there. It doesn't drain as fast now, but it does still drain a bit.
Motorola
Absolutely go for the motorola charger. I use it everytime in car, it's a 1A charger, has a nice blue light and can charge your phone even when using navigation.
And on top of that it's also cheap. I bought it in boundle with a motorola wall charger @ 10€.
is it this one guys http://www.ebay.com/itm/OEM-Motorol...846874?pt=PDA_Accessories&hash=item2a1ea6619a
Make shift cable.
If you're super cheap and/or like to DIY, I was able to get my Galaxy Nexus to recognize any USB charger as AC by cutting a USB extension cable in half. I then soldered/twisted the green and white wires within the USB cable together and then I soldered the red to red and black to black. By putting the modified USB extension in between the charger and a USB to Micro USB cable it will force the phone to recognize the charger as AC instead of USB. I sealed up my adapter with some White and Green heat-shrink tubing I had lying around so it would be easy to identify. Same thing can be done to a USB to Micro-USB cable if you want.
RellikZephyr said:
Genuine Motorola rapid car charger, simply the best. Charges like a wall charger, seriously, phone says it's plugged into AC power
No other charger I have used, has allowed to use Google navigation and still quickly charge my galaxy nexus
Rellikzephyr
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
I have the same and can confirm this. Charges fast.
Sent from my Galaxy Nexus using Tapatalk 2
mroneeyedboh said:
is it this one guys http://www.ebay.com/itm/OEM-Motorol...846874?pt=PDA_Accessories&hash=item2a1ea6619a
Click to expand...
Click to collapse
That's the one. Pours life back into your phone.
Sent from my Galaxy Nexus using Tapatalk 2
tspderek said:
not all 1a chargers actually charge at 1a. it depends on if the two middle pins are shorted together or not.
this charger is cheap as hell - 3 bucks - and charges at a full 1a. i use it and it works perfectly.
http://www.amazon.com/HTC-T-Mobile-...631519&sr=1-1&keywords=htc+mytouch+3g+charger
Click to expand...
Click to collapse
seriously guys. 3 bucks and it's as good as the moto charger. i use it with my nex daily.
I hear you. This thread should have stopped at your post.
FWIW, I added your charger to my amazon wishlist.
tspderek said:
seriously guys. 3 bucks and it's as good as the moto charger. i use it with my nex daily.
Click to expand...
Click to collapse
RellikZephyr said:
Genuine Motorola rapid car charger, simply the best. Charges like a wall charger, seriously, phone says it's plugged into AC power
No other charger I have used, has allowed to use Google navigation and still quickly charge my galaxy nexus
Rellikzephyr
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
I second this.
I have been using this one for years with apply and now the nexus. IT does fast charge and also comes with usb slot
http://www.amazon.com/AT-Micro-USB-...&qid=1340040798&sr=8-2&keywords=att&t+usb+car
For anyone still interested in the Motorola Rapid Charger, Amazon has it a few bucks cheaper than the ebay ad posted earlier.
http://www.amazon.com/Motorola-Vehicle-Adapter-micro-USB-Charger/dp/B000S5Q9CA/ref=reg_hu-rd_add_1_dp
tspderek said:
not all 1a chargers actually charge at 1a. it depends on if the two middle pins are shorted together or not.
this charger is cheap as hell - 3 bucks - and charges at a full 1a. i use it and it works perfectly.
http://www.amazon.com/HTC-T-Mobile-...631519&sr=1-1&keywords=htc+mytouch+3g+charger
Click to expand...
Click to collapse
Anyone in Canada interested in getting one of these for $5 + CDN shipping? I just picked up 4 of these from my mailbox in the states and am selling 3. PM me if you're game. (BTW, charges my GNex in AC mode) And if you're in Vancouver you can pick it up in person

Stock Charger or 2.1 Amp Charger

My question is would using a 2.1 amp wall charger over the stock charger pose any danger of damaging my Flo?
Sent from my Nexus 7 using xda app-developers app
My stock charger is still unwrapped.
I'm using a 2A charger for all my tabs (Nook HD+, Nook Touch, old & new N7s).
TADitto said:
My question is would using a 2.1 amp wall charger over the stock charger pose any danger of damaging my Flo?
Click to expand...
Click to collapse
The charger spec just lists the max output. The tablet is the one that decides how much current to pull. So it is safe to use the 2 amp charger.
How fast will it charge with an 2,1 amp charger ?
fsi09 said:
How fast will it charge with an 2,1 amp charger ?
Click to expand...
Click to collapse
At this point, I don't think it has been determined. Install a battery monitor to see if it draws more current with a 2a supply over the stock 1.3a.
I am living in Germany so I don't have a Nexus 7 yet. But the charger of my mobile phone is broken and I would buy the 2amp charger, if it charges faster because I can use it with my Nexus 7, too.
fsi09 said:
I am living in Germany so I don't have a Nexus 7 yet. But the charger of my mobile phone is broken and I would buy the 2amp charger, if it charges faster because I can use it with my Nexus 7, too.
Click to expand...
Click to collapse
There is something to be aware of when buying a 2a supply. The original Nexus 7 required the data pins (2 and 3) of the charger to be shorted in order to draw full current (don't know if the new one behaves similarly).
The majority of usb chargers out there are designed with Apple products in mind, which shunt a resistive load across these pins to tell the device how much current is available. The result of using the original Nexus 7 with these chargers is that the device only draws about an amp.
My experience has been that HTC chargers have the correct pins shorted, while Monoprice's do not. Your on your own with any other brands. You'd need to measure those pins with an Ohm meter to be sure.

How fast is Qi charging?

I received the Nillkin Magic Disk charger I ordered a few days ago.
It's the first wireless charger I have owned or tried. I have the disk connected to what is supposed to be a 5V / 2A adapter.
It took 7 hours to fully charge my Nexus 5 from 6% with the Magic Disk. This seems like way to long to me and if it's normal, this severely limits the usefulness of wireless charging. Neither the charger nor the phone seemed to get warm at all during charging
How fast is wireless charging supposed to be? Does this vary between different types of Qi chargers?
Felchy said:
I received the Nillkin Magic Disk charger I ordered a few days ago.
It's the first wireless charger I have owned or tried. I have the disk connected to what is supposed to be a 5V / 2A adapter.
It took 7 hours to fully charge my Nexus 5 from 6% with the Magic Disk. This seems like way to long to me and if it's normal, this severely limits the usefulness of wireless charging. Neither the charger nor the phone seemed to get warm at all during charging
How fast is wireless charging supposed to be? Does this vary between different types of Qi chargers?
Click to expand...
Click to collapse
Should be much faster than that, about half an hour longer than stock wired charging with the Nexus 5 adapter/cable.
~2.5 to a little over 3 hours depending on the charger.
If you are using a decent 2A adapter with your charger, it may be your USB cable. Some cables out there are quite crap and despite using a high amp adapter will keep the settings as USB (as if you're plugged into a computer port) and charge at around 500mA max if you're lucky.
In your case, the USB cable may be doing that, and severely underpowering your Qi charger, which will end up charging your phone at like 300 - 350mA. Stock wired by the way charges at ~1050mA by comparison. This could explain why your charge times are over 3x as long.
If you have your stock USB cable that came with your Nexus 5, try testing it with that to see if there is an improvement.
Mine charges at 600mA.
Sent from my Nexus 5 using xda app-developers app
bradputt said:
Mine charges at 600mA.
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
My Nexus 5 charges at roughly 1000mA with its wall charger. So I guess wireless will be 40% less efficient...
hOrnizuka said:
My Nexus 5 charges at roughly 1000mA with its wall charger. So I guess wireless will be 40% less efficient...
Click to expand...
Click to collapse
Depends on the Qi charger and its output. Efficiency is generally around 70 - 75%.
I have a few 1A Qi chargers, and they charge at roughly 740 - 760mA when charging at full speed.

QI Charger which PSU ?

Hi
Didn't think of this before I bought it.. But I've just received a QI charger from Amazon.
Which charger do I used with it?
The one from my nexus 5 or the one from the nexus 7 2013?
Ideally I want to be able to charge either device.
The QI states 5v 1500ma input.
Also what's the best app to monitor the charging, time, input heat etc?
Thanks
Sent from my Nexus 7 (2013) KitKat 4.4.2
I can't say for what apps to monitor times etc... But
Did your qi charger not come with a mains power adapter.
I can't say for the nexus 7 but the nexus 5 comes with a 5v 1200ma charger so it won't be able to supply the current that your qi pad needs.
Have a look on your nexus 7 power brick. It will tell you what it outputs.
Nexus 5
Input : 100-240V
50/60hz 0.2A
Output : 5.0V 1.2A
Sent from my Nexus 5 using xda app-developers app
albert_htc said:
Hi
Didn't think of this before I bought it.. But I've just received a QI charger from Amazon.
Which charger do I used with it?
The one from my nexus 5 or the one from the nexus 7 2013?
Ideally I want to be able to charge either device.
The QI states 5v 1500ma input.
Also what's the best app to monitor the charging, time, input heat etc?
Thanks
Sent from my Nexus 7 (2013) KitKat 4.4.2
Click to expand...
Click to collapse
what brand? you can try plugging it in your laptop. mine (Nillkin) says Input: 5V/2A but it still works just fine if i plug it in the laptop.
otherwise I use the Nexus 5 charger. I think it's just the maximum your charger can handle.
You can use any USB power source... What varies is charge rate. I picked up a 2amp supply from amazon. You have to figure in less than 70% efficiency... Especially taking into account non laboratory ideal conditions and manufacturing...
1 amp input will be like slow charging from a computer at best. 2 amp will be on par with regular wall charging if not better. You always want an adapter that is above what the charger can handle to make full use of the charger... Lower ones will still let it work to lesser and lesser degrees till it doesn't charge the device depending on supply and device needs
albert_htc said:
Hi
Didn't think of this before I bought it.. But I've just received a QI charger from Amazon.
Which charger do I used with it?
The one from my nexus 5 or the one from the nexus 7 2013?
Ideally I want to be able to charge either device.
The QI states 5v 1500ma input.
Also what's the best app to monitor the charging, time, input heat etc?
Thanks
Sent from my Nexus 7 (2013) KitKat 4.4.2
Click to expand...
Click to collapse
It can be used with either the Nexus 5 or Nexus 7 AC Adapters. The Nexus 5 is 1.2A and the Nexus 7 (2013) is 1.35A I believe. Neither will fully power the Qi charger, but it will still be enough to make it work. The charging time for your phone will just be longer since the Qi charger is not being provided full power, so the current the Qi charger can provide to the phone will also be lower. If you want your Qi charger to operate at full efficiency/power, try to use an AC adapter that is 1.5A or higher.
Since your Qi charger only requires 1.5A, the Nexus 7 AC adapter is the closest, so I would recommend using that one.
In the future though, you might want to consider buying a higher output AC adapter:
The Blackberry Folding Blade Charger is 1.8A output, and microUSB, so you can plug it directly into your Qi charger (or phone if you ever need to charge you phone at rocket speed!):
http://www.amazon.com/Blackberry-Folding-Blade-Charger-Playbook/dp/B004OZMWUS/ref=sr_1_30?s=wireless&ie=UTF8&qid=1391055305&sr=1-30&keywords=usb+wall+adapter
The Boxwave Fast microUSB charger provides 2A output, microUSB as well, so if you ever buy another Qi charger it would be good, as many Qi chargers require 2A input.
http://www.amazon.com/BoxWave-Amazon-Kindle-Paperwhite-Charger/dp/B0007POE6O/ref=sr_1_1?ie=UTF8&qid=1391055608&sr=8-1&keywords=boxwave+2a
You could also just buy an adapter similar to the Nexus 5/7 without the cord attached. For example, something like this.
http://www.amazon.com/PowerGen-2-4-Amp-Charger-Designed-Android/dp/B0073FCPSK/ref=sr_1_7?s=electronics&ie=UTF8&qid=1391057154&sr=1-7&keywords=2A+android+usb+charger
As for the app, with all of your criteria, I would suggest Battery Monitor Widget
https://play.google.com/store/apps/details?id=ccc71.bmw&hl=en
mmmmBACON said:
As for the app, with all of your criteria, I would suggest Battery Monitor Widget
https://play.google.com/store/apps/details?id=ccc71.bmw&hl=en
Click to expand...
Click to collapse
+1 on ccc71's apps -- I had several of his first-generation ones and recently took his generous offer to consolidate into Android Tuner (his all-in-one app). He has been great to work with on a dev level and his apps reflect his top-notch skills.
https://play.google.com/store/apps/details?id=ccc71.at (Yes, I found it valuable enough to go with the paid version)
https://play.google.com/store/apps/details?id=ccc71.at.free
Thanks for the replies
I've tried my nexus 7 charger with the qi pad and ran battery monitor widget.
Tablet showed at -432ma, sat it on the qi pad and it changed to -124ma!!
Why a negative figure ? I assume I'm using more power than its charging.
Would a 5v 2a charger male much difference ?
Sent from my Nexus 7 (2013) KitKat 4.4.2
Hi
Just had a thought the value I'm ready is when the screen is on, out it being off make any difference ?
Sent from my Nexus 7 (2013) KitKat 4.4.2
Try using currentwidget (free) to read just the current being provided during charge.
Set it to update at 1 second intervals.
Even with the screen on, if you are not using navigation, streaming stuff, gaming, etc. it should charge even if it is not getting the full 1.5A current provided to it. It would just charge slower not discharge.
Sent from my Nexus 5 using xda app-developers app
albert_htc said:
Thanks for the replies
I've tried my nexus 7 charger with the qi pad and ran battery monitor widget.
Tablet showed at -432ma, sat it on the qi pad and it changed to -124ma!!
Why a negative figure ? I assume I'm using more power than its charging.
Would a 5v 2a charger male much difference ?
Sent from my Nexus 7 (2013) KitKat 4.4.2
Click to expand...
Click to collapse
As I learned from another thread, the cable makes a significant difference. After using a 2a charger, current widget, and checking the charge of all my cables: 2 provided about 1.4a, a few 1.1a,and a large number of cables cut power down to 600 down to 300.
You need a capable 2a charger, a quality cable that you have actually tested, and a qi charger that accepts 2a and doesn't lose a majority when converting to induction.
Sent from my Nexus 5 using Tapatalk
Double03 said:
As I learned from another thread, the cable makes a significant difference. After using a 2a charger, current widget, and checking the charge of all my cables: 2 provided about 1.4a, a few 1.1a,and a large number of cables cut power down to 600 down to 300.
You need a capable 2a charger, a quality cable that you have actually tested, and a qi charger that accepts 2a and doesn't lose a majority when converting to induction.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Did it happen to be this thread? http://forum.xda-developers.com/showthread.php?t=2609087
You might have read that from one of my posts hahah.
I've said in different Qi charger threads to have a good 2A charger and to replace the included micro USB cable with higher quality cables (premium monoprice cables, or the Motorola Ecomoto)
I did a video demonstration on USB cable quality here. Didn't expect that drastic of a difference.
http://forum.xda-developers.com/showpost.php?p=49509790&postcount=52
Hi.
I'm using a nexus 7 charger
1st models charger is 5v 2a
I've tried the following cables: included, nexus 5, nexus 7 (1st edition and 2013) and a couple of other cables.. All with very similar results.
Think I'll send this charger back and then with a recommended one.
Sent from my Nexus 7 (2013) KitKat 4.4.2

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