For questions specifically about issues with battery charging or power supply.
139
votes
4answers
15k views
Does constant charging harm my Android cellphone?
I usually disconnect my cellphone from the charger some time after it's fully charged because I'm afraid the battery could lose capacity over time if I don't. However, I believe modern electronics ...
54
votes
4answers
25k views
Battery Life and First Time Charging on Li-ion Batteries. Myth?
"Ok you bought a brand new mobile phone with brand new battery, after checking its working ok kindly switch it off and charge it fully (100%) then start using it. IT WILL INCREASE YOUR BATTERY LIFE.", ...
24
votes
4answers
1k views
Why are some USB chargers slower than others?
It seems with USB chargers for my android phone, not all are created equal.
The first pic is the official charger which came with my phone (galaxy nexus). It charges quickly, from 0 to 100% in a ...
19
votes
3answers
7k views
Do I have to charge my phone before I use it the first time?
When I got my last phone, a SE k850i, I was recommended to charge it fully once before I even turned it on. Does this apply today as well, for my coming HTC Desire HD?
Why was I recommended to do so ...
18
votes
3answers
9k views
Why is charging from computer using USB slower than using an outlet?
And what is roughly the ratio of the charging speed in USB vs charger? My phone is Samsung Galaxy S, if that matters.
15
votes
4answers
2k views
What causes battery to drain faster than it can charge?
I have a Moto DROID (v1). On a trip from Tyler, TX to DFW airport I had my phone in the car dock and charging. I was using Navigation for directions to the airport and also had Listen running to ...
14
votes
1answer
2k views
Charging over USB can be harmful?
Considering that charging over USB can take around 5 hours (to only 1-2 hours it would take from the wall mounted plug), can it be harmful for the smartphone battery if it's always charged from USB?
12
votes
9answers
13k 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 ...
12
votes
3answers
3k 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 ...
12
votes
2answers
2k views
When should I start charging my Lithium battery?
The comments in this question say that I shouldn't wait until low battery charge level before I charge, because that reduces battery life (this is contrary to my understanding before that the faster ...
12
votes
1answer
1k views
charging from power outlet or computer? to save battery lifetime
I realized that charging my HTC Desire (Android 2.1) takes longer if connected to computer compare to power outlet.
Does it matter which method I use to charge in terms of battery life time?
12
votes
2answers
4k views
What is the difference between USB charging and AC charging?
I've recently got hold on an HTC One X having moved from an HTC Desire.
I noticed that my One X charges very slowly when connected to the USB socket on my PC, whereas the Desire was comparatively ...
12
votes
3answers
3k views
How can I avoid the battery charging when connected via USB?
I'm using my Samsung Galaxy S2 for development so I regularly plug it while it's not fully charged, and my phone starts charging over USB. I think this (charging while in use) can affect battery life ...
11
votes
3answers
10k views
Where is “Stay Awake” option in Ice Cream Sandwich on the Galaxy S3?
I just upgraded to the Samsung Galaxy S III (Ice Cream Sandwich) from the Motorola Droid Bionic (Gingerbread). On my Bionic, there was a "Stay Awake" check box that made it so my "Screen will never ...
11
votes
4answers
2k views
Will any Micro USB cable work to charge my Incredible?
The plug sure looks like any old micro USB plug. Will another cable (like the one from my digital camera) work to charge the battery, or do I need one specifically designed for my phone?
10
votes
6answers
1k views
Is it OK to swap batteries while phone is connected to wall charger?
It takes a few minutes to shut down and restart the phone, it would sometimes be handy to be able to swap batteries without shutting down (i.e. swap in a fully charged battery before going out). ...
10
votes
3answers
3k views
Are Android chargers universal in terms of power (Voltage, amperage)?
I would like to buy a car charger, wall charger and USB cables for my Samsung Intercept. However, $20 for a charger seems expensive and I want to avoid getting ripped off. The Samsung Intercept Manual ...
10
votes
1answer
573 views
Does the device/charger consume power after charging is complete?
I'm a bit OCD about efficiency and I have noticed that at least one of my two Android devices tells me to unplug it after charging is complete to save energy. My questions are:
Is it true that a ...
9
votes
5answers
1k views
Will I damage my Android device by charging it using a generic microusb + car adapter?
I need a second charger and a car charger for my Evo 3D and the same for my wife's Nexus S, but I don't want to pay exorbitant prices for them. Will I fry or otherwise damage the devices using ...
9
votes
2answers
2k views
How frequently is it okay to let the battery discharge fully or as low as possible?
I know that atleast once or twice a month a full battery drain and then a 100% charge helps increase the battery life and also gives more accurate battery readings.
I was wondering, how frequently is ...
9
votes
1answer
241 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 ...
9
votes
0answers
89 views
How can you prevent a Kindle Fire from auto-mounting on a Mac when you plug it in to USB?
I've got a Kindle Fire and I like to plug it in to my Mac to charge up (and also to do some development.) It works fine but it is annoying to have to unmount it every time.
Is there any way to ...
8
votes
2answers
3k 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 ...
8
votes
1answer
893 views
How do I just charge (i.e. not mount for data transfer) a Galaxy Nexus when connected via USB to a PC?
I like to be able to charge my phone from any PC I happen to be using. With my previous HTC Android, I could default to "charge-only" and only switch it to "mount as disc drive" when I wished to, on ...
7
votes
3answers
595 views
Can I recharge my Android smartphone at any USB port?
My girlfirend has just installed a new CD Player on her car that comes with a USB port to connect external devices(Flash card, external hard drive, etc). My question is based due the fact that I told ...
7
votes
2answers
459 views
Other manufacturer's USB data cable for charging?
Is there any harm in using a USB data cable of any other phone (say LG) for charging up a Nexus S? "Any harm" here means will it adversely effect my battery life or the Nexus S device in any way?
7
votes
4answers
27k views
“Charging paused. Voltage too high” on Samsung Galaxy S2 after upgrading to ICS
I am keep on getting this pop-up every 30 sec. I searched on the internet, and most of the solutions are to play with the charging pin.
It's also showing it's charging when it's not.
My phone thinks ...
7
votes
2answers
4k views
Can I use my Nexus7 charger to charge my Android phone?
The Nexus charger has an OP Amp rating of 2A. The charger that comes with the phone has an OP Amp rating of 1A. Both have the same voltage. IP voltage is 100-250 V for both.
I googled and came across ...
7
votes
3answers
213 views
Is it possible to change the background automatically when charging battery?
This is a feature of older nokias, I would like to have it on android! On a related note, it would be nice to have a different background when silenced or on airplane mode.
7
votes
3answers
283 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 ...
7
votes
1answer
314 views
What happens to the battery during bootloader/recovery?
I want to know what happens to the battery (does it charge/discharge/stay constant?) when the device is in bootloader or recovery mode. In both of these modes, a USB may or may not be connected.
If ...
7
votes
4answers
3k views
Is there a quick-fix for the Galaxy Nexus when it signals “charging” without beeing connected via USB?
My Galaxy Nexus goes into charging mode but when it isn't plugged in. The battery symbol then indicates a charging and when in suspend mode, the display turns on which drains battery rapidly. I am ...
7
votes
1answer
4k 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 ...
7
votes
3answers
360 views
Other than the external LED indicator, how can I be notified that my phone is done charging?
I'm wondering if there is a setting that I am missing that allows an Android phone to produce an audio notification (or even vibrate) once charging is complete. As is stands, whenever charging is ...
7
votes
2answers
990 views
Am I overcharging my phone? [duplicate]
Possible Duplicate:
Does constant charging harm my Android cellphone?
I am using my Xperia Active for application development. Given that scenario, I obviously have the phone connected to ...
6
votes
3answers
956 views
Although I was told to charge my Android device before first use, it was already charged. Have I been given a phone rejected by someone else?
I have just received my 'new' HTC one V. The instructions clearly state to charge the phone up before first use, yet the the phone switched on and showed full charge straight away, before I had chance ...
6
votes
4answers
325 views
Is the Nexus One battery charged when connected to a PC via USB?
Do you happen to know whether the Nexus One's battery is charged while being connected via the USB cable to a PC?
If so, is this standard behavior for all Android devices that have a USB port?
6
votes
3answers
3k views
Connect JUST as charging
With ICS my phone now ALWAYS mounts my SD card as an external drive when I plug it into a computer. Sometimes I just want power, especially if I am trying to play a game that's on my SD card.
Under ...
6
votes
2answers
1k views
Can a charger not 100% compliant to the USB specification damage my Andoid phone?
I've bought a world adapter which can charge USB devices as well.
According to the packing the usb will be powered with more than the 500mA as per USB specification - 1000mA.
Will charging my HTC ...
6
votes
4answers
4k 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?
6
votes
1answer
224 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 ...
6
votes
2answers
315 views
Battery life depends on type of charger
When I charge my HTC Sensation mobile with the charger supplied by HTC the battery duration is more or less 1 day (depending of the usage). But (here comes my question) when I charge the mobile ...
6
votes
3answers
719 views
How can I tell at what rate my battery is charging?
I've been told that different charging sources charge my phone at different rates, and have been told that some car chargers act at a normal USB rate instead of a rate closer to an AC outlet.
When I ...
6
votes
1answer
142 views
How can I see what kind of car charger I have?
I noticed that when using navigation plus GPS my phone (Galaxy S2) still discharges a bit even so its connected to a car charger.
While googeling, I found out that regular USB chargers only charge ...
6
votes
4answers
5k views
My phone thinks it's charging
After upgrading my Galaxy Nexus to 4.0.4, it keeps thinking the cable is being plugged in and out all the time. The battery discharges at a normal rate, even though the screen keeps lighting up as a ...
6
votes
1answer
909 views
How do I stop my phone from beeping when it completes charging?
I have a Samsung Galaxy 2 S running Android 2.3.
When I plug it in to recharge, it beeps when it reaches 100%.
I would prefer that it not notify me with a sound.
However, I can't for the life of me ...
6
votes
1answer
364 views
Will charging a smartphone while it is in a case lead to damage? [closed]
Will it harm my Razr to charge it while in an Otterbox case? I heard that would cause excessive heat which would damage the battery or shorten lifespan. True?
6
votes
2answers
2k views
How can I restore the display of the battery status on the lockscreen?
I have a Samsung Galaxy Fit - GT S5670 model. When I charge the battery, there used be a percentage on the pattern screen. Somehow it is not showing now. All it is showing the word "Charging" but no ...
6
votes
1answer
660 views
No touchscreen response when charging
I have a new HTC Desire S in the UK unlocked from Amazon running Android 2.3.3 and HTC Sense 2.1.
When I charge the phone the touchscreen is non responsive. I have tried changing Settings > ...
5
votes
3answers
7k 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 ...
