View Full Version : Battery life problems?
01-02-2006, 04:53 PM
Hi all, my 770 (currently .8 - made in germany) Currenly gets around a day on standby before dropping to two bars on the battery indicator.
I normally leave it on, with just the hard cover over the screen. Am I missing something? After about 2 days on standby, it's flat.
01-03-2006, 05:51 PM
Well its promised to last 3 hours...
But for me if I use it only occassionnally it has used only 1 bar in 2 days (the nights its off). Battery is like under a week old.
01-04-2006, 10:02 AM
I have experienced similar battery life. I would guess that I can do about 2 (maybe 3 on a good day) hours of browsing (1/2 contrast) before my 770 dies. My roommate at college also splurged on a 770, but his battery life seems much better than mine (probably 3-4+ hours). For what it is worth, mine was made in Estonia, not Germany, though.
03-07-2006, 04:05 PM
I've just started having battery problems. I used to only have to charge it every 3 or 4 days of off and on use. Now it's dead first thing every morning.
I fully charge it. Use it a little throughout the day. Put it away with the cover on. The next morning, nothing.
Anyone else seeing this trend, or do I just have a bum battery? I've had the thing for over a month and just noticed the battery life problem.
03-07-2006, 04:11 PM
I leave mine in offline mode in hibernation during the day (cover on). Usually I plug it in when I get home and unlpug it in the morning when I leave. It gets about 2-3 hours of eBook reading, games, etc on the commute to work and back. Today, after reading an eBook for 45 minutes, the battery died.
I didn't look at the bar beforehand, but it's possible the kitten decided the plug was a toy and pulled it far enough out of the wall that it wasn't charging anymore. Is that a cell phone battery it's using? How much to get a second? ;)
03-07-2006, 04:26 PM
Look for a BP-5L (hopefully a 1500 mAh instead of the 1300 mAh models I've seen). Actual Nokia batteries can be kind of pricey ($49), although clones can be found for under $12. I've noticed certain applications don't sleep properly, and will completely drain a battery overnight (Rhythmbox for one). If you have problems with the unit draining itself too quickly, try restarting it and then going into offline mode and see if it makes a difference. Obviously don't start any apps before putting it to sleep :-)
03-07-2006, 04:50 PM
with the cover on mine usualy goes 3 days easy, if I don't actaly use more than a 30 minutes a day. but I odn't leave browser windows open either, might have soemthing to do with it
03-07-2006, 08:11 PM
I have heard speculation that the DSP chip stays on while in standby mode sometimes and drains the battery. I suspect that if you leave a bit of time after closing all your apps that use sound before you put the cover on, your standby time might improve. I know on my 770 you can hear a slight buzz if you put your ear next to the speaker just after the 770 plays a sound that stays for 30 seconds or so. I suspect that if you put the cover on after the buzz stops, the battery life will improve.
Some interesting info here including the suggestion that Li-Ion batteries start aging from date of manufacture rather than based on usage. Some people starting with older batteries might account for the varying battery lives also.
Lithium Ion Battery Info (http://en.wikipedia.org/wiki/Lithium_ion)
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