Originally Posted by jamiefuller

Re the slower charging chargers,

I think the real difference comes from the fact that your phone is probably finished charging nearer morning, the n900 seems to charge from ac and then stop, so if I charge mine at 11pm, and its full by 1am. then it sits on my desk depleting battery until I get up 6-8 hours later.

if your charge doesn't finish charging till say 4 or 5 in the morning you'd automatically be getting 3 or 4 extra hours of standby power.

So i'm swapping to a slower charge for my overnight charges too

Originally Posted by shadowjk

It's bad for the health of Li-Ion batteries to be kept fully charged constantly. The charging is switched off when battery is full. It resumes charging at some threshold (maybe 85percent?) and charges to something like 90-95 again.

These numbers are probably not accurate at all, but you get the idea.

Originally Posted by kaz911

that is not correct. The right way to keep a Li-Ion charged is by trickle charge it when at peak (what ever peak is - 90-95-99%) Even a -10-15% discharge damages the Li-Ion cells. ("natural damage") and will decrease the life of the cells.

But I'm amazed the phone can't work on AC power and switch off battery consumption.

No trickle charge is applied because lithium-ion is unable to absorb overcharge. A continuous trickle charge above 4.05V/cell would causes plating of metallic lithium that could lead to instabilities and compromise safety.

Originally Posted by opax

Hey everybody!

I ve realised something!
The official N900 charger is not very good for the battery! its intensity of 1200mA is too high..

Originally Posted by les_garten

I love this new Toy!

Here's a baseline I did to see what was minimal standby for me.

This is a fresh Reboot, WiFi off, BT off, WiFi Module unloaded with WiFi Switcher. No IM accounts polling. ATT network for voice, all Data disabled.

Only used for a few short voice calls. No appz used. Lots of stuff installed from Testing and devel, and Qole, repositories. Phone was parked on the Dashboard and not on a desktop.

My goal was to get a baseline to work from to see the drain over the course of the battery, and test from this as my baseline. Took almost 3 days to run down, not bad.

Originally Posted by slender

Hmm. Do you understand that on Nokias spec sheet (usa webpage) they say that this phone should have ~11 days standby time. :|