Date: Wed, 17 Mar 2010 18:04:28 +1100 From: Peter Jeremy <peterjeremy@acm.org> To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de> Cc: freebsd-acpi@freebsd.org Subject: Re: Funny battery values (nx6325) Message-ID: <20100317070428.GA2924@server.vk2pj.dyndns.org> In-Reply-To: <20100315062028.GC52442@uriah.heep.sax.de> References: <20100315062028.GC52442@uriah.heep.sax.de>
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--zhXaljGHf11kAtnf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2010-Mar-15 07:20:28 +0100, Joerg Wunsch <j@uriah.heep.sax.de> wrote: >Funny battery configuration with 8-stable: > >remi# acpiconf -i 0 >Design capacity: 279 mAh >Last full capacity: 279 mAh Is this consistent or does it vary from boot to boot or if you disconnect and reconnect the battery? >Serial number: 00784 2006/10/04 =2E.. >The battery is declared as 55 Wh, which would correspond to 5.1 Ah >(probably 3 x 2 x 18650 cells). But is also over 3 years old. Almost everything you do to LiION batteries makes their capacity drop. Whilst 279mAh is probably a bit unrealistic, I wouldn't be at all surprised if the real capacity was 2790mAh. (Having ACPI values be out by exactly an order of magnitude seems fairly common - I've yet to see a system where at least one value wasn't reported as 10x or 0.1x the actual value). >Present rate: 2064 mA >Voltage: 11870 mV These numbers seem realistic. Your best bet is to see how long the system lasts on battery. (If you regularly run on battery, you should probably install some monitoring tools such as sysutils/battmond and sysutils/xbattbar). --=20 Peter Jeremy --zhXaljGHf11kAtnf Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (FreeBSD) iEYEARECAAYFAkugfvwACgkQ/opHv/APuIcVagCgv2118EWy6Sb/Q9NiDyflsLyz Lr0An3Pssl2vuLJ15GJpYU9eo/gRDuxn =TXAF -----END PGP SIGNATURE----- --zhXaljGHf11kAtnf--
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