Battery life is important for mobile devices. Questions regarding battery life should use this tag.

learn more… | top users | synonyms (3)

23
votes
3answers
16k 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 ...
12
votes
1answer
929 views

Which method of wireless tether uses the least amount of power? Bluetooth or Wifi?

If I'm going to wireless tehter to my Android phone what method drains the battery the least? Wifi or Bluetooth?
4
votes
3answers
3k views

How can I prevent my Desire HDs battery from draining overnight?

I've recently got the new HTC Desire HD, which has a poor battery to start with (1230 mAh), but in the last two weeks I've had several nights waking up with a dead battery. The first few nights, I ...
8
votes
4answers
2k views

Will constantly having Bluetooth on drain my battery too fast?

I'm thinking about making an app which will require Bluetooth to be available at all times. However, if this reduces battery charge life significantly, then that's kind of a show stopper. Can anyone ...
4
votes
1answer
888 views

Can anyone reccomend a 2g / 3g switching widget?

I've just got my new HTC Desire HD and I want to switch 3G on and off as required. I used to do this on my old HTC magic and got quite good battery life compared to some friends with the same phone. ...
2
votes
2answers
491 views

Battery Statistics Viewer crashes every time

I have a DroidX with Android 2.2 I went into the Battery Usage settings Settings > Battery Manager See a fual cell looking battery image that says Touch for usage statistics, so I was like awesome ...
8
votes
2answers
677 views

Easiest way to reduce power consumption to phone only

Sometimes I'm in a situation where I can't charge and want to have phone service as long as possible. I won't care if nothing else is enabled. What's the easiest way eliminate as much other power ...
3
votes
2answers
3k views

What can I do to increase battery life on my Android tablet?

Tablets have different usage profiles than phones. So many of the "Phone" suggestions don't apply. So, what can I do to get better battery life on my Android Tablet. (TechPad 7" Tablet from ...
13
votes
1answer
2k 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?
10
votes
7answers
4k views

What effect does tasker/locale have on battery life?

Locale and tasker look pretty cool. How much effect will they have on battery life?
6
votes
5answers
13k views

Is there an app that will drain my battery?

Are there any apps that will specifically help to drain a battery down quickly? The scenario I would want to have this is if I want to quickly drain the battery so I can charge it fully again. Some ...
0
votes
0answers
572 views

Battery conservation? [duplicate]

Possible Duplicate: What can I do to increase battery life on my Android phone? What are some general ways to improve the battery life of my phone?
3
votes
3answers
562 views

Ways to improve battery life on Droid Incredible?

Out of the box, I noticed my Incredible has a lot of stuff running/turned on by default. Besides the basics of turning off WiFi, GPS, and BlueTooth when I'm not using them, are there more steps I can ...
4
votes
5answers
875 views

power consumption by application?

Since cellphone application software requires extra power for processing. Is there any application software that indicate power consumption by particular application?
2
votes
2answers
2k views

Which uses more power/drains more battery: HTC Evo 3G or 4G?

I've read mixed reports online about which radio uses more power -- 3G or 4G. Has anyone done any semi-scientific tests that would answer this question? When constantly downloading data over the ...
3
votes
1answer
389 views

HTC Evo - Can Wi-Fi Radio Sleep?

I've noticed that when actively downloading a lot of data, the Wi-Fi radio uses much less power than the 3G radio. However, when the phone is not being used much, the 3G radio will sleep but the ...
3
votes
1answer
779 views

Improve Android battery life by lowering CPU freq

I would like to know if it could be possible to use adb (Android Debug Bridge) to tell the phone to lower its CPU max freq. I'd like to use less battery if possible, and in my use case I don't mind ...
8
votes
2answers
2k views

Turn off cellphone (SIM) radio

How do I turn the cellphone (SIM) radio on an Android phone? The radio consumes a lot of power (30-70%), especially when the phone is idle. Sometimes I only need to use other functions (e.g., clock, ...
172
votes
5answers
28k 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 ...
13
votes
6answers
1k views

How can I improve the battery life on my device? [duplicate]

Possible Duplicate: What can I do to increase battery life on my Android device? My Desire is absolutely great, but with my usage the battery life is really a big problem. I have a few ...
5
votes
3answers
4k views

How to break in a new cell phone battery?

Whats the best way to break in a new cell phone battery? I just got a replacement battery for my Motorola Droid and so far through 2 cycles it is barely lasting a few hours.
117
votes
20answers
63k views

What can I do to increase battery life on my Android device?

What can I do to get better battery life on my Droid? Battery life seems awful. Less than 15 hours or so on normal usage.