Date: Fri, 16 Dec 2011 18:04:04 +0100 From: Oliver Pinter <oliver.pntr@gmail.com> To: Ian Smith <smithi@nimnet.asn.au> Cc: Dominic Fandrey <kamikaze@bsdforen.de>, freebsd-stable@freebsd.org Subject: Re: battery display broken Message-ID: <CAPjTQNHVh5qdsQdYVVtSy=6kLpPcN5-wA7e2o7jMhbWGMangzg@mail.gmail.com> In-Reply-To: <20111217000216.Y64681@sola.nimnet.asn.au> References: <4EEAF70E.1040104@bsdforen.de> <20111217000216.Y64681@sola.nimnet.asn.au>
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Some others have problem with HP laptop and freebsd battery indicator. kern/162859: [acpi] ACPI battery/acline monitoring partialy working (switching) On 12/16/11, Ian Smith <smithi@nimnet.asn.au> wrote: > On Fri, 16 Dec 2011, Dominic Fandrey wrote: > > It seems something broke with the battery display. Last night it > > showed 94% remaining capacity for more than 2 hours. > > > > Afterwards I docked the machine (HP6510b) and rebooted it. Since then > > more than 8 hours have passed, but it still shows 16% (the LED indicators > > state that the battery is full and no longer charging). > > > > # acpiconf -i b > > Design capacity: 4703 mAh > > Last full capacity: 4703 mAh > > Technology: secondary (rechargeable) > > Design voltage: 10800 mV > > Capacity (warn): 236 mAh > > Capacity (low): 48 mAh > > Low/warn granularity: 100 mAh > > Warn/full granularity: 100 mAh > > Model number: Primary > > Serial number: 00835 2010/01/05 > > Type: LIon > > OEM info: Hewlett-Packard > > State: charging > > Remaining capacity: 16% > > Remaining time: unknown > > Present rate: 3351 mA (39585 mW) > > Present voltage: 11813 mV > > At least four things can go wrong. The battery charging circuit might > be broken (my first T23 failed that way after 5 years); the battery > might just need 'conditioning' (discharged to exhaustion, beyond normal > low-battery shutdown, then fully charged - perhaps twice), to reset its > internal Coulomb Counter; the CC chip may be faulty; or the battery > itself may be failing / have failed, usually one cell first. > > Is the battery hot at this stage? If that 'Present rate' is correct, a > 3.35A/39.6W charge should tend to overheat the battery over time, if > charging continues beyond full capacity, which may indicate a bad cell. > > 11.8V seems too low for a fully-charged 10.8V nominal LIon battery. I > have several 4.0 and 4.4Ah like the below, which charge to ~12.4V, and > only get down to 11.8V while discharging, at around 85% nom. capacity. > > Interesting that your LEDs display a different view; perhaps BIOS + EC > just monitors voltage and cuts charge, but then what's reporting that > fairly high charge rate? I'd expect the Embedded Controller to be doing > that .. any dmesg indications of ACPI problems talking to the EC? > > The 16% is likely from the battery's onboard coulomb counter, but then > so might be the (bogus?) charge rate report. All speculative, I know .. > > # acpiconf -i 0 # Thinkpad T23, 8.2-R, older but ok battery. > Design capacity: 43200 mWh > Last full capacity: 31850 mWh > Technology: secondary (rechargeable) > Design voltage: 10800 mV > Capacity (warn): 2160 mWh > Capacity (low): 432 mWh > Low/warn granularity: 1 mWh > Warn/full granularity: 1 mWh > Model number: IBM-02K7026 > Serial number: 932 > Type: LION > OEM info: Panasonic > State: high > Remaining capacity: 100% > Remaining time: unknown > Present rate: 0 mW > Present voltage: 12386 mV > > > > The chipset is Intel 82801 from the ICH8 family. I'm running > > RELENG_9/amd64. > > All that said, I don't know specifically how HP do things, or what > normal full charge voltage is expected. Tried another battery? > > cheers, Ian > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >
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