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

learn more… | top users | synonyms (2)

7
votes
3answers
430 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
3k 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 ...
7
votes
1answer
459 views

Battery Stats Are Vastly Incorrect

After updating to 6.0.1 (MMB29K) from 6.0.0 (MRA58R) I have come to face a very odd and never seen before issue. My battery stats are wildly wrong. My stats show 4k% or higher and no battery stat ...
7
votes
4answers
12k views

Nexus 4 problems when charging

My Nexus 4 is not charging when plugged into wall but it charges when connected to PC USB. When plugged into wall nothing happens, the battery icon shows nothing. This problem appears and disappears ...
7
votes
1answer
1k 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 ...
7
votes
1answer
988 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 > ...
6
votes
3answers
4k 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
364 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
4answers
87k views

How much power does a Galaxy Tab 10.1 charger need to supply?

The Samsung Galaxy Tab 10.1 comes with a special charger which (I'm assuming) provides a higher current output than the USB standard. Without it, the device can actually die, even if the USB cord is ...
6
votes
2answers
2k 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
1answer
278 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
1answer
660 views

What does a red battery icon indicate?

While charging my Jellybean 4.1 device at my PCs' USB, I see the following red battery icon in the notification bar: What does the red color indicate?
6
votes
2answers
786 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
2answers
473 views

Does leaving a lithium-ion battery uncharged for 3-6 months at a time hurt battery life?

Does leaving a lithium-ion battery uncharged for 3-6 months at a time hurt battery life? I have seen plenty of questions and articles about the dangers of leaving your cellphone in the charger, but I ...
6
votes
1answer
202 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
2answers
3k 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
3answers
10k views

Nexus 7 charges very slowly, even with 2 amp chargers

I'm facing a rather painful issue with the battery life/charging issue with my Nexus 7 (4.2.2) When idle and plugged into my 2A charger with the stock USB cable, it charges VERY slowly. I'd say ...
6
votes
1answer
645 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?
5
votes
2answers
6k 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 ...
5
votes
3answers
22k views

Samsung Galaxy S5 turns on when fully charged and never turns off

I just 'upgraded' from the Samsung Galaxy S4 to the S5. Both use similar Android 4.4.2 Touchwiz software, but the new one has some odd behavior. I set smart screen sleep (or timeout, how it's called) ...
5
votes
1answer
10k views

What happens when I connect a 2 amp charger instead of the 0.7 amp charger provided? [duplicate]

Possible Duplicate: Is my phone liable to explode if I charge it with a charger that came with a different phone? What's the safe limit on charger output for a Galaxy Nexus I have a ...
5
votes
4answers
568 views

How to prevent brightness from going to full when the battery low popup appears?

Whenever the "battery low" popup appears in my tablet, the brightness goes to full. This makes no sense because the brightness should be decreased to the minimum instead of going to the maximum, as ...
5
votes
1answer
334 views

AC-USB Charging Device Makes Sounds when Device Fully Charged

This might not be the right place to ask this question, as it falls under the purview of electronics, however that SE is not about consumer electronics. And this phenomena has only happened with ...
5
votes
1answer
587 views

Why does my Android device generate more heat on an AC charger?

My Huawei IDEOS u8150 is new and ever since I used the AC charger that was supplied with it, my device gets a bit hotter (a noticable 5 degrees Celsius extra compared to charging via USB from laptop). ...
5
votes
2answers
72k views

Samsung Galaxy Tab, charging technique through USB Cable

From Galaxy Tab is not being charged through USB Cable @Chris Stratton Tablets have larger batteries than phones and may be unable to sufficiently charge from the half amp limit of a USB port, ...
5
votes
2answers
2k views

Can I save my htc desire if the battery is dead?

I ran my HTC Desire on a 0% charged battery - and it shut it self down. Now it won't charge anymore and wont start even when plugged in. What are my options?
5
votes
2answers
7k views

Has anyone found out why some BIONICs won't charge fully on non-BIONIC wall chargers?

This seems to be a fairly common issue. Upon attempting to charge my Motorola DROID BIONIC with two non-Motorola microUSB wall chargers, I couldn't get the phone past 40%. With the Moto charger, it ...
5
votes
1answer
8k views

Long term effects of charging Nexus 5 with an other device's charger (fast charging)

A roommate has bought a OnePlus One (OPO) phone. When I tried charging my Nexus 5 with the charger of OPO I found that it charged my Nexus device amazingly fast. I'm talking 3-4 times faster charging ...
5
votes
1answer
4k views

Battery indicator increase when not charging

Basically, two hours ago my battery level is at 8%, then an hour ago, it was at 9%. Now it's at 10%. Why is it going up even though it is not plugged in? Would I need to calibrate my battery? Note: ...
5
votes
1answer
642 views

Don't charge to 100% when always-on wall-plugged-in

I want to use a Google Nexus phone for an always-on wall-plugged-in WiFi tethering access station. It occurred to me that if I just do it like this, then I'm risking ruining the battery within a ...
5
votes
1answer
2k views

How can I charge an ASUS Transformer while connected to USB?

Currently I'm developing with my Nexus S but would like to use Asus Transformer for that. So far I figured that device won't charge from USB. And for me - I need to have it on USB for debugging while ...
5
votes
2answers
263 views

Forcing higher USB current

The big problem: Like a lot of people, we are finding that our tablet does not maintain charge when connected to USB (PC or other device, not AC jack, we need data and charging simultaneously). What ...
5
votes
2answers
9k 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 ...
5
votes
3answers
6k views

How can I disable the front status LED when charging my device?

Charging my smartphone the front LED is always shining annoyingly green. This bothers me especially while reading an ebook which is why I am looking for a way to disable this feature. So how do I ...
5
votes
3answers
256 views

is there a reliable source of charging current?

I am testing several chargers and cables to find the optimal combinations for a fast charge. I was so far using CurrentWidget and was getting just a few values, (independently of how much the battery ...
5
votes
4answers
3k 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 ...
5
votes
3answers
8k views

Samsung galaxy 3 says charging paused. Battery temperature too low

I plugged in my S3 when it said 1% battery life and the red charging indicator light never came on, when i checked it a few minutes later it was at 0% and powered off. Immediately after that I tried ...
5
votes
4answers
8k 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 ...
4
votes
3answers
345 views

What is the standard voltage and current levels for an android battery?

I am using Micromax Canvas Nitro A310; recently, I bought a new USB cable and it seems its not doing the job as required. My phone is not getting charged as it was before. Either it takes too long ...
4
votes
2answers
247 views

Can the Droid Eris be charged on a PowerPlate Wireless Induction Charging Base?

Can the Droid Eris be charged on a PowerPlate Wireless Induction Charging Base?
4
votes
3answers
36k 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 ...
4
votes
2answers
178 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
123 views

Battery level always 42%

I purchased a second hand nexus 5 to find out that the battery indicator is always showing 42% and never updates, regardless of the actual battery charge level. I tried replacing the battery with ...
4
votes
2answers
287 views

My phone doesn't always charge at full speed, even with certain 2-amp chargers. What are the necessary conditions for it to charge at full speed?

I've noticed that my Samsung Galaxy S4 doesn't always charge at its maximum rate of charge, even when it seemingly should. For example, car DC adapters that claim to provide up to 2.0A current only ...
4
votes
2answers
4k views

Galaxy Nexus does not charge when turned on

Galaxy Nexus does not charge when powered on, but it charges properly when powered off. Phone doesn't detect USB connection also. This happened without any reason. Phone is not rooted. Tried ...
4
votes
2answers
955 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
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 ...
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
1k views

Is possible to charge device and provide data transfer using a single USB port?

I have a tablet that only has one USB port that it used to recharge the battery (so no extra charger port), and I need to connect another device to it (ex: USB drive or printer) that only needs to ...
4
votes
1answer
296 views

Battery level on Asus eee pad Transformer with dock

I'm wondering if anybody knows how the battery level is measured on the Transformer when the dock is connected. I fully charged the other day, and after few hours of use the battery level was still ...