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Battery Life

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By Basil3, Inactive Recognized Themer on 20th October 2010, 08:46 AM
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Rather than clogging up other threads with my battery experiences, I thought I'd summarise where I'm at, and see how other people are doing with their battery life.

So I started yesterday on a full charge, and by 2ish the phone was dead. I used it fairly heavily, but wifi was off. I don't think I made any phone calls, and didn't use gps. It was mainly messaging and using the xda app. I had changed my screen brightness to auto the night before, so thought this might have reduced the battery life.

I then left the phone off, and charged through till just before 5pm. At this stage, the phone was up to between 90-100% charge. My intention was to see if I could get through to this afternoon on this charge. Last night I made a phone call for about half an hour, and used gps for about 10 mins driving in the car. Other than that it was a bit of messaging and browsing, but not heavy use by any stretch of the imagination. I had wifi off, facebook sync every 4 hours, and screen brightness set to about 50%.

This morning I woke to less than 10% charge on the battery, so have left the phone at home charging, and I'm back to my hero...at least for the morning.

I must admit, I'm starting to get concerned, because I really don't think I'm using this phone more than my Hero, and I could easily get a day out of it (unless I was going for a long run using some kind of gps app).

What are other people's experiences? I'm surprised I'm not hearing more about this, and I'm hoping mine is just a one off!

**UPDATE**

Today, 12 hours after taking my phone off charge, I have just under 20% charge remaining. The phone is now on it's fourth cycle, and although I haven't used the phone quite as heavily as yesterday, I have still used it quite a bit and have had WiFi on the whole time. This is still not amazing battery life, but it is still much improved. It definitely illustrates that the battery may take a few charge cycles before it optimises itself.
20th October 2010, 08:58 AM |#2  
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Post Battery Life
My first full day was yesterday.
WiFi on all the time. Screen brightness set to automatic. Twitter and facebook refreshing every hour. Weather every 4 hours.

Unplugged the phone at 7am, 100% charge.
During the morning I flashed the phone twice (due to the proximity sensor issue) so it probably recieved an extra 10 mins of charge.
Following the flashing, WiFi went straight back on so I could download all the apps again, and resync sense and all the contacts. There was some playing of games, some use of Google Goggles (so camera use there) and some web browsing.
By 13:00 I was down to 90% battery - which was pretty good I thought.
Through the afternoon I didn't get to use the phone much apart from a couple of short gaming sessions.
By 17:00 I was down to 80%. I got home from work and played around on the phone until my wife got home and we went out for a meal. The pub we were in had no signal, and I didn't really play around with the phone.

By the time I got home and went to bed, the phone was probably around 65% full.

So not a heavy day of use, but not far off a standard day for me - so not too bad as far as I'm concerned. Certainly about 30% better than my Touch Pro2 was!
20th October 2010, 09:06 AM |#3  
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I think we need to define a consistent way to measure battery life for Android.

Something like ACID test for web ... Quadrant for benchmark ...

I don't know, maybe we can agreed on something how to measure it. Or build an app to simulate phone usage which user should run it continuosly and then at the end got the result: Your battery life is rated 4 hours, 10 minutes straight using this test.

Probably not the best measurement, but it should give us a "number" to compare with other devices.

I can only suggest (I am not a developer), but I believe there are a lot of talented coders here in XDA which should be able to build this kind of "standard" app battery measurement pretty easily.
20th October 2010, 09:09 AM |#4  
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Somebody is recommending 3-4 full charges cycles for battery optimization. Do you think it will really help?

Battery is really deal breaking issue for me.
20th October 2010, 09:25 AM |#5  
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very helpful thread.

as mentioned few post earlier, there really should be a battery benchmark tool.

so was your wifi and/or 3g turned on the whole day?
20th October 2010, 09:38 AM |#6  
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Quote:
Originally Posted by jiidaineko

very helpful thread.

as mentioned few post earlier, there really should be a battery benchmark tool.

so was your wifi and/or 3g turned on the whole day?

My friends also lasted over a day with pretty good use, there seems to be better results with the brightness on auto...from what I have picked up on the forum...maybe a test is need to see how much difference there is between full brightness on one battery charge and auto on the other.
20th October 2010, 09:46 AM |#7  
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Yupe, the battery benchmark should not be so complicated.

Start the app with 100% Battery life
Some options in the app (for features that might NOT be in an Android phone or might not be available at the time?):
[ ] Turn on Wifi
[ ] Turn on GPS
[ ] Turn on Bluetooth

Set the app to WAKE all the time, display turned ON all the time of the test
Set Keyguard to OFF (device will not be locked)

Set Brightness to AUTO
Set all speakers to SILENT
Set vibration to OFF

Then loop until battery down to 5%, perform the below tasks in sequence:
* Play movie for 15 minutes [speaker muted]
* Browse to website??? be careful not to overload the website :P
* Doing arithmatic
* Doing 3D
* Play MP3 [speaker muted of course]

As soon as the battery down to 5%, app stop and display result ...


And of course restore all the settings.

The app should use generic API that is supported by Android, not some hacky wacky if you know what I meant.

Please if someone can code this, that would be very nice! Standard XDA Battery Measurement app for Android!

Quote:
Originally Posted by jiidaineko

very helpful thread.

as mentioned few post earlier, there really should be a battery benchmark tool.

so was your wifi and/or 3g turned on the whole day?

20th October 2010, 09:52 AM |#8  
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Quote:
Originally Posted by gogol

Yupe, the battery benchmark should not be so complicated.

Start the app with 100% Battery life
Some options in the app (for features that might NOT be in an Android phone or might not be available at the time?):
[ ] Turn on Wifi
[ ] Turn on GPS
[ ] Turn on Bluetooth

Set the app to WAKE all the time, display turned ON all the time of the test
Set Keyguard to OFF (device will not be locked)

Set Brightness to AUTO
Set all speakers to SILENT
Set vibration to OFF

Then loop until battery down to 5%, perform the below tasks in sequence:
* Play movie for 15 minutes [speaker muted]
* Browse to website??? be careful not to overload the website :P
* Doing arithmatic
* Doing 3D
* Play MP3 [speaker muted of course]

As soon as the battery down to 5%, app stop and display result ...


And of course restore all the settings.

The app should use generic API that is supported by Android, not some hacky wacky if you know what I meant.

Please if someone can code this, that would be very nice! Standard XDA Battery Measurement app for Android!

the app should log the result too.. since some phone is dead by time 5% due to calibration..
20th October 2010, 10:07 AM |#9  
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@Dazultra2000: I would almost trade the proximity sensor problem for the battery life you're getting!

In any case, I'm gonna leave my phone charging till half an hour after the green light comes on, then I'm gonna try another day of normal usage. I'm going to turn wifi back on, as I usually would, and set screen brightness to auto.

With my Hero I used to go for runs using a GPS app to log the route, I'm not going to bother trying that with this phone until I'm sure I can survive a day.
20th October 2010, 10:50 AM |#10  
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Quote:
Originally Posted by Basil3

I then left the phone off, and charged through till just before 5pm. At this stage, the phone was up to between 90-100% charge. My intention was to see if I could get through to this afternoon on this charge. Last night I made a phone call for about half an hour, and used gps for about 10 mins driving in the car. Other than that it was a bit of messaging and browsing, but not heavy use by any stretch of the imagination. I had wifi off, facebook sync every 4 hours, and screen brightness set to about 50%.

This morning I woke to less than 10% charge on the battery, so have left the phone at home charging, and I'm back to my hero...at least for the morning.

I don't know when you wake up but that could be like 14 - 15 hours that you mentioned which possibly isn't all that bad (plus the extra 10% you had remaining). Personally I want to see what it's like when you unplug it at 8am, not at 5pm the night before since I can't see any good reason not to leave the phone charging over night anyway.

If you then manage to get about 10 to 12 hours or so then there probably isn't much issue. Granted you weren't using it while asleep so the battery shouldn't drain overly quick but I wouldn't want to use your test as an example of a days use.

Thanks for the info but. If I was you I'd just have a car charger too if you like to use GPS...I can't see any reason not to.
20th October 2010, 11:07 AM |#11  
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Quote:
Originally Posted by Smigit

I don't know when you wake up but that could be like 14 - 15 hours that you mentioned which possibly isn't all that bad (plus the extra 10% you had remaining). Personally I want to see what it's like when you unplug it at 8am, not at 5pm the night before since I can't see any good reason not to leave the phone charging over night anyway.

If you then manage to get about 10 to 12 hours or so then there probably isn't much issue. Granted you weren't using it while asleep so the battery shouldn't drain overly quick but I wouldn't want to use your test as an example of a days use.

Thanks for the info but. If I was you I'd just have a car charger too if you like to use GPS...I can't see any reason not to.

Yeah, I would normally charge overnight, but since I had given a charge through to 5pm I wanted to see how it lasted....see if I could get through 24 hours. I wake up at 5am, so that was around 12 hours, with only 5-6 of those hours being time when I would've actually been using the phone. This is also bearing in mind that I had started yesterday on a full charge and the phone was dead by 2pm.

The GPS thing in the car was only to do a quick test, literally 10 mins. I need to buy a new car charger with micro USB, but I just made a note that I had done this because I knew it would affect the battery.

Anyway, we'll see what today brings.
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