[maemo-users] Battery life VERY short on N810, last OS2008...

From: Matt Emson memsom at interalpha.co.uk
Date: Mon Apr 21 16:09:01 EEST 2008
Giacomo Tufano wrote:
> The 'metalayer-crawler' is, apparently, idle (bad, I'd like a simple
> solution). :-(

Even though it often doesn't look like it is the metalayer-crawler, 
killing it always makes a big difference for me. Honestly, I had my 
first week of N800 ownership with the battery lasting not much past one 
day. If it still had a charge in the morning, it was at critical levels. 
I removed the crawler after seeking advice, and the battery life is not 
up to a week. I use my tablet about 1 - 2 hours a day, 5+ nights a week. 
I can charge it up at the weekend and easily still have battery enough 
to surf on Friday. If I leave it in stand by (select "switch off WLAN", 
"lock keys and turn off screen") it will last over 7 days with no use 
and still have at least 1 hour of use online.

The key, kill the crawler process and stop it from re starting and turn 
off bluetooth and WLAN when you are not using the device.

The worrying thing is that the metalayer-crawler might actually be 
harming the battery by putting it at critical levels repeatedly. Lithium 
ion batteries like to be about 80% charged, any more than 80% and they 
can be unhappy if left charged for periods, but also - any less than say 
40% and they also get unhappy. Most batteries die because they go below 
the minimum safe charge level, which harms their chemical makeup and 
their capacity (from what I have read.)

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