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

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1answer
2k 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% ...
0
votes
0answers
457 views

Battery and recharging suggested practices on Galaxy Note 3

Can someone please verify that the note 3 uses a Lithium Ion Battery? Does using the Note3 - for example making a call - while charging negatively impact it? My old flip-phone would heat up if I ...
0
votes
1answer
23 views

Google Tablet help need power

Just purchased this for Christmas, it will not charge or turn on, any suggestions. Have tired several different charger
0
votes
2answers
562 views

DX752 purchased for Christmas will not charge

The iRola DX752 purchased for Christmas does not charge. It worked for a while. Does not work when plugged to an outlet either.
0
votes
3answers
134 views

How to check if my battery is OK?

I use my phone mainly for wifi use and I know it is a battery hog. However, what I would like to know is how much time it takes for the battery to charge. I guess it is supposed to take like 4 mins to ...
0
votes
0answers
243 views

Stop device connected as host charging connected device

I am connecting a Nexus 10 to an Arduino board in host mode. The Arduino board has its own power supply, but is still drawing power from the tablet. This post suggests that this may happen if the ...
0
votes
1answer
977 views

Why won't my S4 charge in the USB port

I am trying to charge my Galaxy S4 in my laptop but no matter which USB port it is in it will not charge. It is completely dead now. I am abroad and the adapter doesn't charge it either. HELP!
1
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0answers
173 views

Galaxy tab 10.1 charging with USB 3.0

When referring to this post, it seems like the Samsung Galaxy Tab should be able to charge while connected to a USB 3.0 port while running. I've noticed that when I have my Tablet running and plugged ...
0
votes
0answers
412 views

Samsung Galaxy Ch@t (GT-B5330) unable to charge

I have a Samsung Galaxy Ch@t (GT-B5330), but it don't charge. I was at my grandmother and when I wanted to charge it, it was vibrating (short) when I was back at home it didn't charge. I didn't try ...
1
vote
1answer
303 views

How to solve the short battery life with galaxy s4?

I bought Galaxy S4 in just half year. However I found some wrong with the bettery, my phone shutdown automatically recently with over 20% battery. I can only use the phone for two hours after my phone ...
3
votes
1answer
6k views

How does fast-charge work?

How does Fast Charge work? Does it actually charge your device faster, and if so, is there a downside to using it?
0
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2answers
3k views

Samsung Galaxy S2 shuts off when plugged in…screen goes black then a grey empty battery appears

Samsung Galaxy S2 shuts off when plugged in...screen goes black then a grey empty battery appears for a second then disappears this "flashes" several times in about 4-5 second intervals. I can not ...
0
votes
0answers
48 views

How do I decide what car charger I need to buy?

I am with Nexus 5 and finding it difficult to decide on what car charger or car dock with charger I need to buy. As there is no accessories from parent company (LG or Google) I not sure what charger ...
0
votes
0answers
129 views

Why my Note 2 can not charge properly

Yesterday I plugged my (turned-off) Note 2 in but it refused to charge properly, even though I charged it via pc. I removed the stock battery and swapped a OEM and my mpj extended battery ...
2
votes
2answers
3k 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 ...
0
votes
2answers
71 views

When selecting an USB extension cable to extend power cord, what are the relevant considerations?

I want to use USB extension cords to extend the USB power cords for my Android device. What are the factors that could affect normal charging behavior? (Consider "normal charging behavior" to be ...
1
vote
2answers
2k views

Device Steadily Discharging While Plugged Into AC?

Question: My device (Galaxy Note 2 running the stable CyanogenMod release) is charging extremely slowly and discharges while it's plugged into AC power. What happened to cause this and what's ...
1
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0answers
66 views

Galaxy Nexus reboots on USB connection

I've had my Galaxy Nexus since April of 2012, and it's been fairly reliable ever since. However, for the past few weeks, I've noticed that it's rebooting whenever I plug it into my computer for ...
0
votes
0answers
135 views

USB connection issues with Nexus 4

I've installed some app from Google Play called "franco.Kernel updater", which had an option to enable "fast charging" (the app claims it provides a custom kernel that saves battery life). After I ...
0
votes
0answers
44 views

charging samsung galaxy tab 2 10.1

My cat recently broke the jack that came with my tablet, so I bought a cheaper one from walgreens, making sure it was 2 amps. They didnt have one exactly 2, so I bought a 2.4, and theres still a red X ...
0
votes
0answers
29 views

How to stop USB charging? [duplicate]

I'm a developer so i plug in my device for quite a long time, so i think it might affect my battery life. Is there any way to disable usb charging?
0
votes
1answer
72 views

How to select a power supply for a given Android device

There are a variety of products on the market which provide a power supply for Android devices through the ubiquitous MicroUSB 2 port. These include adaptors for 12V "cigarette lighter" car DC power ...
3
votes
2answers
2k views

Increasing my phone's charging rate while tethered

I have a Samsung Galaxy S3 and a laptop with 2 USB 3 ports. When tethered to my laptop (to provide Internet access via GSM/HSPA data), the phone charges very slowly, especially if I am using it for ...
0
votes
1answer
155 views

Galaxy Nexus won't charge, will immediately reboot if turned off

Ran into a bizarre problem this morning. My Galaxy Nexus was plugged in, but not charging. Data transfer over USB seemed to work, but no charging would happen. Stranger still, if I turned the phone ...
1
vote
1answer
97 views

Is it safe charging a Galaxy Nexus through a USB 2A port? [duplicate]

This is a newbie question. While travelling, I need to recharge my Galaxy Nexus and my digital camera, both of which are meant to be charged through a micro-USB port, ie. 0,5A. To reduce charging ...
1
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0answers
31 views

Samsung tab charging

Tab gt7500 battery went flat while downloading and now does not want to charge with supplied charger or via computer
3
votes
2answers
141 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 ...
0
votes
3answers
5k views

how much current can Samsung Galaxy S II take for charging with whatever ROM?

What is the maximum power SGS2 can use when charging, given a capable charger? I use power-consuming apps while driving a car (navigation + video registrator), and looking for ways to minimize ...
0
votes
0answers
55 views

Charging my tablet

When I plug my galaxy tablet in to charge it there is an red X on battery sym and a page pops up that wants me to choose what ubs to us MEDIA PLAYER or MASS STORAGE.. why is this?
0
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0answers
168 views

Can't connect to PC after changing my phone's charging IC

I changed the charging IC in my Galaxy Note 1 because of a malfunction. Now I'm able to charge my phone using the wall adapter, but I cannot connect it to my PC via USB. Now, when connected to a ...
1
vote
0answers
67 views

Android battery mucking up

I have an unusual problem with my galaxy s4 battery. Screenshot (click for larger variant) Sometimes when the battery level is 85% it can shut off and when I turn it back on it can go straight to ...
-3
votes
1answer
108 views

Android software runs differently based on different battery chargers?

I have a Samsung Galaxy Nexus and a Samsung Galaxy Mini2. In mid-August I lost my GNex battery charger; then I started charging the GNex with the Mini2 battery charger. Their specifications are: ...
1
vote
1answer
255 views

Is there any battery-less Android-based device

I'be been working on some Chinese (bit crappy) device, with own system, that had one wonderful (at least for me) feature. When constantly powered-up (plugged to power adapter) it could work without ...
1
vote
3answers
527 views

What happens when using a cellphone when charging?

What happens when a phone is being used with the charger connected? Will it take power from charger and save the battery usage? OR At one end, the charger keeps charging the battery and at the ...
0
votes
0answers
71 views

samsung galaxy nexus charging problems

it doesn't charge until battery totally dies and few minutes after that only, charging triggers. Not sure if it an issue with charger or the phone battery.
3
votes
3answers
4k views

Can my Samsung Galaxy Nexus and iPhone 5 share same micro USB charger?

Does the micro USB charger cable that comes with the Samsung Galaxy Nexus be used with the iPhone 5 and vice versa?
1
vote
1answer
597 views

Power problems with Droid Incredible 2

My daughter's Droid Incredible 2 is mostly dead. Symptoms: If we can manage to turn it on, it only stays on for a minute or so after it completes all of its start-up tasks. Then turns off and acts ...
9
votes
4answers
4k views

Disable USB charging

For some reasons not related to the battery life, I need to disable the battery charging when a USB host is connected to my phone (a rooted Nexus 4). Taking a look around on the internet (link1, ...
1
vote
4answers
222 views

Phone wakes when unplugged, how to keep it asleep?

I'm trying to charge my phone with an inconsistent power source. Unfortunately, the phone wakes up whenever power stops... Sometimes (often) using more power than is charged. Is there a way to stop ...
2
votes
1answer
399 views

Battery charging indicator went crazy on my Samsung Duos S6802

While I was playing a game, my cellphone warned me that my battery went too low. I plugged the charger but it was like it didn't work (charger indicator didn't show the bolt icon). After several ...
2
votes
1answer
743 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 ...
0
votes
1answer
926 views

Can a Samsung Galaxy 3 tablet be charged safely using a universal travel charger?

My daughter is in Thailand and she has been using a solar device to charge her Samsung Galaxy3 tablet (7 in.) This method is no longer charging the tablet sufficiently for use. She has a universal ...
0
votes
4answers
2k views

CyanogenMod 10.2 on Galaxy S3 charging problem

I have a Galaxy S3 with CM 10.2 build date 28-09-2013. The problem I am facing is slow charging of my mobile. It takes around 6-7 hours to charge when connected to AC power source. Before CM with S3 ...
0
votes
1answer
156 views

Nexus 4 won't charge through laptop on low power

When my Nexus 4's battery is less than 5%, it won't charge while connected to my PC, but I can charge by plugging my Nexus 4 the wall adapter. I believe it is a hardware problem. Can you help me?
0
votes
1answer
540 views

How to NOT charge when USB debugging? [duplicate]

I develop "on the road" using a laptop that's not connected to a power source, so when I debug on my android devices, they drain my laptop battery. Unfortunately, the laptop is a MacBook Air so spare ...
0
votes
1answer
366 views

Nexus 4 wont hold charge after screen and battery replacement

I've just replaced my broken screen and put a new battery into my nexus 4 following this you tube vid: http://www.youtube.com/watch?v=AZDAIgwbXk4. When I first plugged in the charger (1A generic usb ...
1
vote
2answers
237 views

How can I pick the correct replacement usb charger for my phone?

My phone has a wall charger with outputs 5vdc and 850mA, which just broke (I saved the USB-microB cable which I've been using to charge from laptops). Unfortunately, OEM chargers of that particular ...
1
vote
0answers
1k views

Galaxy s2 is recognised by computer but doesn't charge

This is an odd one but today I noticed by S2 wasn't charging while plugged in. I tried connecting it to the computer and it came up as a media device as normal but still didn't charge, the battery ...
1
vote
2answers
6k 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: ...
5
votes
2answers
343 views

Battery meter went crazy and now stays at 0%

I have a Samsung Galaxy Discover that worked fairly well until the last week or so. I ran the device down down to 0% - at which point the device shut off. I performed a full recharge and then ...