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

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3
votes
1answer
4k views

Micro USB cables that only charge but no data, no mounting etc (Samsung Galaxy S)

Not all cables seem to be created equal but I've never got to the bottom of why so many (cheap) cables I try only charge - no data. Anyone know why? Certain pins not connecting? I do know that longer ...
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 ...
3
votes
2answers
171 views

My Nexus 7 is dead, any suggestion?

My Nexus 7 died. I didn't see it happening. My son was playing, went to school and left it charging. At night it didn't turn on anymore. The screen is black. I've followed the Asus instructions. This ...
3
votes
2answers
7k 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 ...
3
votes
1answer
605 views

Get charge state remotely

I want my desktop to check state of the phone and warn me at appropriate time (calculated on my presence at the desktop, phone charge, time of day and other criteria). Is there a way to get my phone ...
3
votes
3answers
422 views

How can I prevent the battery in my Nexus S from draining overnight?

I have a Google Nexus S and for the past 2-3 days whenever I go to sleep the battery drains completely overnight. I mean when I go to bed the charge on my phone is plus 90% but for the past 2 days ...
3
votes
0answers
193 views

Large difference in battery discharge, when Nexus 7 is on and off

My father got a brand new Google Nexus 7 II (2013) LTE tablet few weeks ago. Ever since first use, he was complying about battery discharge rate. Few days ago, I did some measures and I'm quite ...
3
votes
3answers
8k views

Galaxy S3 is stuck at Samsung logo splash screen and won’t charge

A little bit of help would be highly appreciated. A few days ago, my Samsung Galaxy S3 started freezing randomly. I had to remove the battery in order to restart it. Yesterday the problem got worse: ...
3
votes
0answers
481 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
347 views

Nexus S and phone charger get unusually hot when plugged in

I was using my Nexus S today and it turned off suddenly. I plugged it in to charge and saw it load to the boot splash screen, and then I went to sleep. When I woke up 2 hours later my phone was dead. ...
3
votes
0answers
327 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 ...
3
votes
0answers
576 views

Nexus7 Stuck in Reboot Following Full Discharge [duplicate]

I am experiencing the same symptoms as described in the following: " Nexus 7 is stuck in reboot loop after full discharge " My Nexus 7 is full discharged. I have it connected to Factory AC-to-USB ...
3
votes
1answer
340 views

How do I keep CPU off when charging?

When I connect the USB power source, it makes CPU to stay on (even though "Development->Stay awake" is off). When charging from a weak power source if makes battery to drain even faster than is case ...
3
votes
0answers
302 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 ...
3
votes
0answers
359 views

My phone crashes while charging

My phone sometimes shuts down without a reason or warning. It often happens while it's charging. I'm not positive charging is an absolute requirement for this to happen, but I only remember it ...
3
votes
0answers
216 views

Can a cheap cable prevent AC charging from working?

A while ago, I had my phone repaired (the USB socket was worn out) and had to replace the USB cable as well. Since then I haven't been able to quickly charge my phone in AC mode. Previously it worked ...
3
votes
2answers
494 views

Samsung GT 7.7 hung after charging

After charging my Samsung GT 7.7, I switched it on but it just showed the "Samsung Galaxy Tab 7.7" and stayed like that like it hung. What do I do?
3
votes
1answer
517 views

VZW Galaxy Nexus exhibiting bizarre charging behavior

Lately I've noticed some weird behavior with my Galaxy Nexus. I am rooted, but running stock ICS. Here is what it's doing wrong: Phone sometimes will not charge, I must turn it off for it to start ...
3
votes
0answers
623 views

Battery life in Samsung Galaxy 3

I recently updated my Samsung Galaxy 3 to Android 2.2 . After the update my fully charged battery dies in just 3 hours(without any use) and around 1 hour if I use it (talking,browsing etc). I am using ...
2
votes
3answers
13k 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? ...
2
votes
5answers
29k 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 ...
2
votes
2answers
1k views

Will using my phone whilst charging make it charge slower?

Just the question in the title. If I have my phone plugged in and charging, will it take any longer to get up to 100% charge if I'm using it or will this make no difference? (I'm using a galaxy ...
2
votes
2answers
3k views

How can I make my Lenovo ThinkPad tablet charge up faster?

It takes a very long time (half a day) to charge up with a USB 2.0 charger plugged in the wall outlet.
2
votes
2answers
561 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 ...
2
votes
1answer
1k views

Do you need a special charger for a Nexus 7?

Do you need a special charger for a Nexus 7? I've been trying to use the same charger as I use for my Android phone and it works poorly. If you tilt the tablet upwards it's charging, but otherwise ...
2
votes
4answers
5k views

Galaxy S 2 battery won't charge while being on

First of all, LOVE the Galaxy s2, even though it has some problems - which phone doesnt, right? I've had the Samsung Galaxy S2 for 2 months. It worked fine. Since a week my phone won't charge the ...
2
votes
1answer
2k views

Possible to charge one phone off another?

What's stopping the ability of charging a cell phone from another cell phone? If I were to create a crossover/patch USB cable and connect it between two phones or tablets, would there by any way to ...
2
votes
2answers
11k 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 ...
2
votes
2answers
3k views

LG P500 Not Starting After Full Discharge

My LG P500, with FroYo, doesn't seem to be working. I let my battery completely die and now, even while plugged in, it won't turn on. Is this normal and should I just wait the battery to be charged ...
2
votes
1answer
4k views

Samsung Galaxy Ace wont charge

Hello my wife has the galaxy ace gt s5830 but for some reason it wont charge either off the original charger, or blackberry charger, neither off the usb in the laptop will it charge, if i take the ...
2
votes
1answer
570 views

Does using an unofficial charger negatively affect overall battery lifetime of a GS4?

According to two employees at the Sprint store, using an unofficial charger for the Galaxy S4 will negatively impact the overall life of the phone's battery (edit: in other words, the battery will ...
2
votes
1answer
471 views

How can I connect my A500 to an iMac for charging and file transfers?

I have a Acer Iconia A500 and I am using an iMac. I cannot charge or share my device as mass storage with my computer over USB, though I am able to use bluetooth for transferring data. Are there any ...
2
votes
2answers
951 views

How long device has been running since last charge?

In Android Lollipop, how do I see how long it has been since the last time I charged the battery? I mean I can get the approximate time by eye-balling the graph shown in Settings -> Battery. But, is ...
2
votes
1answer
657 views

Where is the battery animation called?

I have a tablet from China, it's a Q8H Allwinner. It is rooted, and I've browsed the internal storage for hours to find the battery animation, I found them at framework-res.apk... Now I want to find ...
2
votes
1answer
1k views

Nexus 5 touch response is slow while charging

My problem is simple. Touch response of my Nexus 5 is very slow while charging. I can't even unlock the pattern while charging. I need to draw it very slowly. My OS is Android 4.4.2. I have been ...
2
votes
1answer
8k views

First battery charge on new tablet?

I got yesterday a Galaxy Tab 3 and I want to be sure what's the best way for the first battery charge. On the shop, they told just turn it on, wait for the battery to finish and then charge it to 100% ...
2
votes
2answers
6k views

Is it safe to use phone while charging with portable powerbank?

I understand using phone while it is being charged by a normal charger is not advised. What about using phone while it is being charged by a portable charger (powerbank)? I own a HTC one and i was ...
2
votes
2answers
2k views

My Nexus 4 says it's charging but it's actually discharging

I plug in my Nexus 4 to a charger cable plugged into a wall outlet each night, and each morning I disconnect it. But sometimes during the day when it's not plugged in, like today, it says "Charging - ...
2
votes
1answer
155 views

File Manager opens when connected to charger

I am using Sony XPeria with Android 4.0.4. If I connect the device to an AC adapter/charger, the ASTRO File manager opens by default. How to stop the app from opening when the device is connected to ...
2
votes
1answer
2k views

Samsung Galaxy S2 can't transfer pics, shuts down by itself, does not charge

My Samsung Galaxy S2 (not rooted) has all sorts of problems. It started when I tried to take some pics today. I would take a pic, and it would shut down. I tried to get pics off my phone by syncing ...
2
votes
1answer
6k 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 ...
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 ...
2
votes
3answers
8k 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 ...
2
votes
1answer
569 views

How to train the battery

I am trying to find the way to use my battery in the most efficient manner. I found several suggestions how to achieve the longest life of the battery, and one of these suggestions is quite strange ...
2
votes
1answer
481 views

My HTC EVO 3D is unresponsive after charging

For about the past month or so, whenever I pull my HTC Evo 3d off the charger (wall primarily, haven't tested against USB yet) the phone is unresponsive for anywhere between 15-60 seconds, and it's ...
2
votes
3answers
399 views

Using Moto Droid Car Charger with Samsung Galaxy Nexus

I just upgraded my phone from the original Motorola Droid to the Galaxy Nexus. Both phones use the same micro USB port. Is there any reason I cannot use my Droid's car charger with the Nexus?
2
votes
1answer
218 views

Phone connected to charger full time - never sleepmode - any danger?

Yeah, might sound strange, but I managed do install Debian Linux on my Android phone. Because the phone needs very little power, it is, for me, the perfect server. I plan to disable sleepmode and to ...
2
votes
1answer
268 views

How do I turn off the light that comes out of my moto droid's usb port?

When I plug my moto droid into a charger a bright white light comes from the micro usb port. It is super bright when its on my nightstand and the lights are out. It drives me nuts.
2
votes
1answer
74 views

Computing when on charger - long term effects on battery life

Donating your computational power for scientific projects is, in some cases, available for Android. One of them, the World Community Grid, states that "Using the application will not significantly ...
2
votes
1answer
249 views

Where is the battery animation called when charger connected to phone (OFF)?

I have Moto E (Rooted) which turn on when connected with USB via Laptop but not when connected to Wall charger instead it shows Battery animation. I got to know that battery animation is at ...