I'm running HP 530 laptop and Ubuntu 10.04. My old battery had died some time ago, so I got a new one.
I'd like the possibility of being able to change the limits when the charger starts to charge the battery (e.g. <50%) and finished (e.g. >80%). It should sufficiently extend the battery life. See How to Prolong Lithum-based Batteries.
I know that Lenovo users are lucky to be provided with a solution because of the tp_smapi
kernel module.
Is there a solution that helps?