Actually, it's the 100% charge state that is bad for LiIon. But a charge/drain cycle will likely wear the battery out even faster - LiIon batteries wear model is based on usage time. A 90% charge is ideal for long term storage - or for someone who leaves the laptop plugged into AC power most of the time. As far as software controls, I'm not familiar - but one thing that works in any OS is to simply remove the battery when on AC power. -Blake -------- Original Message -------- Subject: [CentOS] Battery condition tools CentOS/Dell From: Kwan Lowe <kwan.lowe at gmail.com> To: centos at centos.org Date: Wednesday, August 05, 2009 8:43:36 AM > Hello all: > Does anyone know of a tool/project that will allow me to read the > battery condition (not the charge status) on a Dell laptop battery? > Under XP there is a utility that warns that the battery is still > holding a charge but that the battery is degraded and should be > replaced. > > Also, not sure if this is possible, but I would like to control how > the laptop charges the battery. I tend to have the laptop plugged in > most of the time and this constant charging state is apparently very > bad for battery lifetime. So a charge/drain cycle is supposedly > better. > > Thanks, > Kwan > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >