For questions specifically about issues with battery charging or power supply.

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2
votes
1answer
5k views

HTC One X Does not charge or turn on

A day ago my HTC One X would not turn on. When I booted into developer mode it said at the top "**LOCKED**" and "Security Warning" (or something similar). It also said "cpu-bootmode: disabled". I was ...
0
votes
1answer
147 views

If I charge Nexus 4 with a wireless charger will it charge considering red LED error

I've had a red LED error in my Nexus 4 for a week and it won't turn on or charge. I've tried everything, pressing the power button for 60 seconds, etc. I even opened it up and removed the battery and ...
1
vote
2answers
126 views

Full battery completely depleted within a few hours without any user activity — what to do?

I left my phone on the table with full battery without doing anything with it. After a few hours the battery was completely depleted, and the phone automatically shut down. What could cause such a ...
4
votes
3answers
13k views

“Charging paused. Battery temperature too high” while connected to car charger

I have a Galaxy S2 with ICS. When I use it in my car, while it is charging from a car charger, I occasionally get this popup: "Charging paused. Battery temperature too high" Also Waze is running ...
1
vote
1answer
77 views

email me when a charger is connected?

I want to be able to leave a device with charger plugged in the socket, and have it email me (or call/text me on my another device) as soon as it gets power (ie when the charger is technically or ...
3
votes
0answers
323 views

Android stuck in downloading mode

So what happened is that my mobile (Galaxy S4 - GT-9500) ran out of charge. When I plugged in the charger and tried to turn it on, it went directly to what I think is the recovery mode (Android logo ...
3
votes
2answers
1k views

galaxy s3 not charging

I have a samsung galaxy s3. It is only 7 months old. Its battery is not getting charged. I have tried to reboot and take the battery out and put it again,it still doesnt get charged. The usb port is ...
0
votes
1answer
315 views

Reverse polarity damage

I need help. I was using a generic usb charger to charge my android phone and it was charging fine but somehow the polarity was reversed. After being plugged in for some time, the phone became very ...
2
votes
0answers
34 views

Battery percentage going down while charging! [duplicate]

(device: Samsung Galaxy S 3) I've just witnessed something rather strange: while tethering to my laptop, with the phone being plugged in a power source (the charger I got with the device) - the ...
3
votes
2answers
6k views

Why doesn't my phone charge?

Okay, so I already ordered a new battery, but in the mean time. Why won't my phone charge? I have tried every charger/cable in my house and car (over 10 chargers and around 15 cables). Double ...
9
votes
1answer
605 views

When phone is off and I plug it in to outlet the phone turns on instead of charging

This might be hardware but I'm not sure so thought I'd ask. Went to plug in to charger at home last night - noticed it didn't charge. Wake up in the morning though and the battery hadn't dropped (or ...
3
votes
3answers
3k views

Nexus 7 says it's charging but it isn't

I have had a Nexus 7 since September and today something strange happened. I plugged it in, as usual, to recharge the battery. It charged up to 36% and now it still says it's charging but it never ...
5
votes
3answers
46k views

Charging paused. Battery temperature too high or too low

I have a Samsung Galaxy player that has been giving me the message "Charging paused. Battery temperature too high or too low". I left it unplugged and powered down all night, and it still gave me the ...
0
votes
0answers
1k views

Charging paused, battery temperature too low

I dropped my Samsung Galaxy S2 in water, and now when I plug it in I get a message that says: Charging paused, battery temperature too low Is there any way to fix this?
3
votes
7answers
8k views

Charging the Asus Transformer (Prime)

Can you charge the Asus Transformer (or the newer Prime) without the keyboard dock? Since the tablet itself does not have any USB ports, I don't see how you could charge the tablet without the dock ...
3
votes
2answers
821 views

Why does my phone have erroneous input when connected to a non-OEM power source?

My phone (Motorola DROID RAZR MAXX) seems to have problems accepting touch input when connected to a non-OEM power source. When connected to my computer via USB, it accepts input fine, as it does when ...
2
votes
2answers
8k views

What's the input current draw for the Nexus 4?

I am trying to find the maximum possible current draw of the Nexus 4 when recharging the battery. The adapter that comes with the Nexus, supplies 1.2A The Qi Charging Station needs 1.8A But I ...
8
votes
2answers
5k views

What's the safe limit on charger output for a Galaxy Nexus

The charger that came with my Galaxy Nexus phone outputs 5 volts at 1 amp. I have another charger that outputs 5v at 2 amps. Is it safe to use this charger? What's the limit I can use without damaging ...
2
votes
2answers
542 views

Nexus One overheats/restarts when connected to car dock or car charger

Whenever I connect my Nexus One to the official car dock, my phone heats up rapidly, and eventually restarts. Obviously, the phone is restarting to prevent it from damaging itself. So the question ...
3
votes
0answers
311 views

since upgrading my software to 4.1 my samsung galaxy note wont charge properly

I recently upgraded the software on my galaxy note to 4.1 and since then its been very strange when charging. I put it on charge last night woke up this morning it said charging 23% came back to it a ...
0
votes
2answers
261 views

Plug in the charger the wrong way?

Yesterday, I mistakenly tried to push the charger plug in my phone upside-down. The phone seemed to react to it. Does it matter which way the plug is turned for charging?
1
vote
1answer
220 views

Does the Asus Transformer Prime GPS extension kit have a USB pass thru to charge the tablet

As noted Asus is offering a GPS Extension Kit for the Asus Tranformer Prime TF201. Does the module has a pass thru USB multipin connector to allow charging from the USB cable or does one have to ...
2
votes
5answers
24k views

MTP mode instead of charging with plugged in wall charger

My Galaxy Tab P1000 was charging when it fell down. I tried plugging it in again to continue charging but the battery icon now appears with a cross mark and instead the MTP mode initializes. How can ...
13
votes
9answers
24k views

Galaxy Tab is not being charged through USB Cable

Currently i am using Samsung Galaxy Tab, model is GT-P1000, to test my application, so i usually attach it with PC through USB cable and it is attached for a whole day though it is showing low battery ...
2
votes
3answers
5k views

Reset battery history after unplugging charger?

As far as I can tell, the stats on the Battery page of Settings records the time from when the battery is booted up onwards. What I'd rather want it to do, is to reset that counter whenever I ...
4
votes
2answers
158 views

Do phones have a power supply?

This is definitely a noob question, I'm not an engineer but as far as my knowledge goes, the power supply on a phone would be its battery. However, my Nexus One stopped turning on recently, the ...
4
votes
1answer
747 views

USB charging in host mode [duplicate]

Possible Duplicate: Using an OTG cable while charging Recent versions of Android allow USB to operate in host mode. But is it possible for them to be powered/charged via that same USB port ...
1
vote
1answer
2k views

can sony xperia u(st25i) 's otg be connected to external power?

Can Sony Xperia U be connected to a Y-Cable to provide extra power for OTG to avoid phone battery consumption? I'm asking this because the phone is already giving power ,will that make a short ...
1
vote
1answer
423 views

Kindle Fire Power Adapter Specs

I have misplaced the power adapter for my v1 Kindle Fire. USB charging works but is dog slow. What are the specs of its adapter, including any branding, as they're never labeled properly. Also, a ...
4
votes
1answer
3k views

Can I use Asus Transformer power supply and dock as with regular laptop?

I couldn't find this information in all reviews, so I am asking here about it -- I would like to get such experience with Assus Transformer: I put everything together -- I plug power supply into the ...
2
votes
0answers
182 views

How can I turn off the notification for the power plug connection?

My Samsung Galaxy S3 with Android 4.1 plays a sound every time I connect it to the power plug. Is there a way to turn that off without affecting all other notifications?
4
votes
1answer
2k views

HTC mains-to-USB charger: use to charge other non-HTC but USB-chargeable devices?

My HTC Desire Z came with a charger that consists of a mains electric plug with a USB socket for attaching the phone to to charge via USB. Other devices such as the iPod touch can be charged via ...
4
votes
2answers
756 views

Is battery calibration important for Android phones?

I heard that battery needs to be calibrated for a first few usages. I heard that battery needs to be calibrated every 40 charge cycles. I heard that i must not let battery get too low and not ...
4
votes
1answer
220 views

Does my Android phone uses battery or outlet power to operate while being charged?

I am curious about knowing which power source does my android uses up, while it is being charged while switched on.. I know i can test it by keeping it in charging and pulling the battery.. but i am ...
6
votes
1answer
236 views

Does the processor speed have any bearing on the time taken to charge?

I have a rooted Samsung Galaxy S II i9100 running the default Sammy Android 2.3.3 on the Siyah Kernel 2.0 I use SetCPU to change my processor speeds to conserve battery life during the day. Will ...
1
vote
1answer
234 views

Is it ok to charge my Nexus S with an iPhone power adaptor? [duplicate]

Possible Duplicate: Is my phone liable to explode if I charge it with a charger that came with a different phone? I have an iPhone charger (produces 5V and 1A output). Is it okay to use ...
0
votes
1answer
177 views

Android Experiments drain battery

While I am experimenting with Android I found it annoying that the device even if is plugged in on the PC using a USB is discharging. THe problem is that I am performing some intensive experiments ...
1
vote
0answers
228 views

Samsung Galaxy tab 10 does not start up

My tablet won't start. With the USB cable connected I can start my tablet using the "power & volume" trick. When in prompt menue for various reboot options it says in yellow text Can't access ...
1
vote
1answer
721 views

HTC One X was dropped and now it doesn't charge or turn on

Last night, my HTC One X was dropped. Suddenly, it became so hot at the back and on the screen. After an hour or so, the phone started to cool down. But, it doesn't charge or turn on; even the ...
0
votes
1answer
364 views

WiFi tether without losing battery

So, as everyone already knows, when tethering data over WiFi your battery may overheat/lose battery/etc. What I want to do is while in my car: Stream internet over WiFi to >1 person Navigate with ...
15
votes
3answers
5k views

Battery - do they last longer if recharged when empty?

I'm about to buy a Samsung Galaxy Ace (it's not much expensive and I think it's a pretty good phone), however everyone has been complaining with the battery life but admitting that isn't bad compared ...
4
votes
4answers
840 views

My Milestone doesn't always charge

I have a Milestone and sometimes when I plug my (supplied Motorola) charger in the 'charging light' on the side does not illuminate and the phone does not charge. I think that this may also happen ...
2
votes
3answers
11k views

Can USB charging (via mains adapter or from PC/Mac) of Android tablets be the main, primary method of charging? Or are there design issues?

Are there design issues with tablets being charged by USB not seen with Android phones? I saw this on another forum, what are your thoughts on this with regard to my question? ...
3
votes
0answers
285 views

Verizon Galaxy Nexus Discharging When Plugged In Even After USB Replacement

I've got a Verizon Samsung Galaxy Nexus that as of a few weeks ago quit charging - in fact it quickly drains the battery (discharges 2% / minute if not more) while plugged in. I tried different ...
7
votes
3answers
394 views

Is there a way to tell when the battery is actually at 100%

I recently acquired an HTC Desire Z / G2, and installed Cyanogenmod 7 onto it. Something I've noticed though is that sometimes the battery drains very quickly, and sometimes it does not. Since I have ...
4
votes
1answer
4k views

How do I turn on the battery full notification sound?

Similar to this previous question, but I want to enable the battery full notification sound, not the opposite :) My Galaxy S used to make a nice beep and switch the screen on briefly when the battery ...
2
votes
1answer
6k views

Prevent ICS From Mounting USB Storage

I have a Motorola Droid Razr Maxx running Android 4.0.4. I'd like to prevent ICS from mounting USB storage every time I plug it into a USB host. I just want it to charge by default. I am very ...
3
votes
2answers
2k views

Can you charge a Galaxy Tab 2 7" with a charger from Galaxy Tab 10.1?

I've already got a charger for the Galaxy Tab 10.1 and I'd like to be able to use it charge both that and a Samsung Galaxy Tab 2 7". It seems to work, but I was wondering if there is any sort of ...
6
votes
4answers
6k views

How can I change screen timeout based on whether my phone is/not charging?

I'd like my screen to stay lit while charging but have a timeout when just on battery. Is ther any way to do this?
7
votes
1answer
5k views

How do I disable the lock-screen when my Samsung Galaxy S II is charging/connected via USB?

When I develop for my Samsung Galaxy S II, the screen locks as usual after the configured time. However, for development it would be practical if the phone would just stay awake while it is connected ...