On Mon, 2003-02-10 at 07:42, Roberto Sanchez wrote: > If your battery is more than 12 months old (could be more or less depending > on how often you charge/discharge or run on just AC and whether or not you > completely drain it before recharging) it may just be time for a new > battery. Li-ion batteries develop a memory over time which prevents them > from holding as much charge as when new. The "gas guage" in the BIOS could > also be out of calibration. "The Li-ion batteries prefer a shallow discharge. Partial discharges produce less wear than a full discharge and the capacity loss per cycle is reduced. A periodic full discharge is not required because the lithium-based battery has no memory." - http://www.buchmann.ca/Chap10-page6.asp You are thinking of older NiMH or NiCd batteries. > The best thing you can do is first double check your BIOS settings and make > sure you don't have anything out of the ordinary and that the machine is not > set to auto power down at certain battery charge level. Then fully charge > your battery (or as full as you think it will get). Then completely > discharge it by booting (with a floppy) to an OS without any power > management (Win 95, 98, or NT4.0 or any version of DOS is what I recommend) > and let the machine run until it shuts down on its own at the end of the > battery. Recharge and repeat the cycle 3 or 4 times. This is an excellent way to totally ruin a Lithium ion battery. -- Joe Wreschnig <piman@sacredchao.net>
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