Date: Tue, 12 May 2009 20:51:42 +1000 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: Peter Jeremy <peterjeremy@optushome.com.au> Cc: freebsd-acpi@freebsd.org Subject: Re: Fighting for the power. Message-ID: <20090512204716.W46325@sola.nimnet.asn.au> In-Reply-To: <20090512104333.GD41857@server.vk2pj.dyndns.org> References: <200905120021.23223.ivakras1@gmail.com> <20090511203825.BDC351CC0B@ptavv.es.net> <20090512104333.GD41857@server.vk2pj.dyndns.org>
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On Tue, 12 May 2009, Peter Jeremy wrote: > On 2009-May-11 13:38:25 -0700, Kevin Oberman <oberman@es.net> wrote: > >LI-Ion batteries will deteriorate if not fully discharged periodically > >and even more if almost always on AC power and fully charged. > > Li-ION batteries deterioriate under virtually any conditions. My > reading suggests storing them partially charged in a fridge is best. My reading also. I've got a spare virtually-new Li-Ion battery for my old Compaq Armada (my main server :) in the fridge at the moment, its present battery looking like it might last another year at best. > >charge point. "Full discharge" means disabling automatic suspend on low > >battery in power management and letting them run down as far as > >possible. > > A friend & I both have HP nx6125 laptops. We have both accidently run > our batteries to cutoff on a number of occasions and every time we do, > acpiconf reports the battery capacity drops by about 5%. Might that be because the battery only adjusts its capacity data on full discharge, though? cheers, Ian
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