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Date:      Mon, 15 Mar 2010 07:20:28 +0100
From:      Joerg Wunsch <j@uriah.heep.sax.de>
To:        freebsd-acpi@freebsd.org
Subject:   Funny battery values (nx6325)
Message-ID:  <20100315062028.GC52442@uriah.heep.sax.de>

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Funny battery configuration with 8-stable:

remi# acpiconf -i 0
Design capacity:        279 mAh
Last full capacity:     279 mAh
Technology:             secondary (rechargeable)
Design voltage:         10800 mV
Capacity (warn):        14 mAh
Capacity (low):         3 mAh
Low/warn granularity:   100 mAh
Warn/full granularity:  100 mAh
Model number:           Primary
Serial number:          00784 2006/10/04
Type:                   LIon
OEM info:               Hewlett-Packard
State:                  high
Remaining capacity:     99%
Remaining time:         unknown
Present rate:           0 mA
Voltage:                12424 mV

The battery is declared as 55 Wh, which would correspond to 5.1 Ah
(probably 3 x 2 x 18650 cells).

When unplugging the AC supply, I get:

remi# acpiconf -i 0
Design capacity:        279 mAh
Last full capacity:     279 mAh
Technology:             secondary (rechargeable)
Design voltage:         10800 mV
Capacity (warn):        14 mAh
Capacity (low):         3 mAh
Low/warn granularity:   100 mAh
Warn/full granularity:  100 mAh
Model number:           Primary
Serial number:          00784 2006/10/04
Type:                   LIon
OEM info:               Hewlett-Packard
State:                  discharging
Remaining capacity:     98%
Remaining time:         0:08
Present rate:           2064 mA
Voltage:                11870 mV

I'm not sure whether the "remaining time" is realistic or not.  In the
past (FreeBSD 6.x), it used to immediately shut down when unplugging
AC since the battery state was always unknown.  Now, FreeBSD 8.x is
the first version that actually manages to survive running on
batteries.

This is an HP/Compaq nx6325.

Any clues how to fix these values?
-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)



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