while your observation is true, i think it is the heat that kill the battery. most new notebook stop charging after it reached 100%. my notebook will not charge if i just use a few % of battery. in battery status i can see "97% not charging" even if i plug in.

i second this. if not mistaken, u don't need to drain lithium-ion battery anymore... there is no memory

sorry, yes, memory effect! not sure if anyone already posted this before, here is something that should be able to answer the question posted in this thread!

http://batterycare.net/en/guide.html

i ve been using batterycare and practicing it without reading the link above but now, i m more confident continue practicing this:

1. no need to unplug battery after fully charge
2. remove your battery before doing heavy gaming and leaving it over night for torrent, etc
3. DONT use battery till 0%
4. A charge cycle is NOT count as number of time you charge ur battery. say, u use 50%, charge back 100%, that is only half cycle.
5. HEAT is #1 enemy of your battery

hope TS can close the thread liao..

from the article: "It's recommended to perform partial discharges to capacity levels of 20~30% and frequent charges, instead of performing a full discharging followed by a full charging."

with my manlish skill, i think it means that the most, use it up to 20-30% remain... BUT frequent charges is also recommended = just charge whenever u can, even if still got 90%...

also, interesting to know, if u wanna store battery for long time, best store your battery with only 40% capacity...

there is also an interesting info on charge time from apple; 2 hours to charge battery to 80%, 2 more hours to charge the remain...

This post has been edited by cowithgun: Nov 29 2010, 09:04 PM

(according to those articles) it is true that after a large number of cycle of charges, the capacity will drop BUT a complete cycle is not count as how often u charge... say, u have 80% left, charge back to 100%, and do that 5 times, u only complete 1 charge cycle.

at least that is how i understand it... and i do practice that...

wow! very good insight on battery! LiFepo4 seem so cheap! but half capacity making it a no-go for me i ll rather to have longer usage per charge when i need it, and change the battery after 2 years...

can commend on the Asus B series that uses Sonata battery or Boston-Power battery?