T40 Battery

[Seleur]

Hi folks. I have a Thinkpad T40 with the 9-cell battery (lithium ion), and there appears to be a variety of different opinions floating around. Is it wise to let the battery do a deep discharge and go below 3%, then totally recharge it? I've read some recommendations to do it, and others say that that is bad on a Lithium-Ion battery. So far, I've basically used the battery occasionally, and let it get down to about 40%, then I charge it up.

Thanks for the advice.

Chris

 

[nanyangview]

heh..i would like to know this too..since i have the same lappy and battery I let mine drain to 10% and then recharge. On the compaqs i heard that pple get maximum battery life when it is drained / charged for 3 times...


seleur..what battery life are u getting from ur lappy?

 

[Schlocemus]

I'd like to know also, although I have an Inspiron 8500... with optimal power settings I can get around 3:30 battery life -- although I've never drained past 50% or so, thus far

 

[eriqesque]

Originally posted by: Seleur
Hi folks. I have a Thinkpad T40 with the 9-cell battery (lithium ion), and there appears to be a variety of different opinions floating around. Is it wise to let the battery do a deep discharge and go below 3%, then totally recharge it? I've read some recommendations to do it, and others say that that is bad on a Lithium-Ion battery. So far, I've basically used the battery occasionally, and let it get down to about 40%, then I charge it up.

Thanks for the advice.

Chris

And if you look in the maxmiser battery info then under status battery health.
What is the full charge capacity and the design capacity?

 

[thuned]

Doing it everytime would shorten your battery life. For my Dell, it says the battery will last 300 full dis/re charges. 1000 partial charges.
BUT, after some uses (I don't know, maybe 10-20?), the battery will suffer the "memory effect". It will no longer charge to 100%. This is when you would want to discharge completely.