[ltp] T61: battery charging inspite of tp_smapi thresholds
Sun, 26 May 2013 18:40:09 +0200
On 05/26/2013 05:45 PM, Dmitry E. Mikhailov wrote:
> On that 'bad' battery the 'remaining_percent_error' parameter is 7 while
> on the good one it's 5. So maybe it tries to re-calibrate forever.
> Could you please take a look at that parameter on your battery?
Please find here the values from two different T61 machines.
The first is a T61 8898-AQG and has a 9 cell battery:
# cat /sys/devices/platform/smapi/BAT0/manufacturer
# cat /sys/devices/platform/smapi/BAT0/manufacture_date
# cat /sys/devices/platform/smapi/BAT0/first_use_date
# cat /sys/devices/platform/smapi/BAT0/cycle_count
# cat /sys/devices/platform/smapi/BAT0/remaining_percent
# cat /sys/devices/platform/smapi/BAT0/remaining_percent_error
# cat /sys/devices/platform/smapi/BAT0/stop_charge_thresh
The second is a T61 8895-WFJ and has a 6 cell and an UltraBay battery,
with respective ouputs ordered from BAT0 to BAT1:
# cat /sys/devices/platform/smapi/BAT*/manufacturer
# cat /sys/devices/platform/smapi/BAT*/manufacture_date
# cat /sys/devices/platform/smapi/BAT*/first_use_date
# cat /sys/devices/platform/smapi/BAT*/cycle_count
# cat /sys/devices/platform/smapi/BAT*/remaining_percent
# cat /sys/devices/platform/smapi/BAT*/remaining_percent_error
# cat /sys/devices/platform/smapi/BAT*/stop_charge_thresh
Batteries have been recalibrated last over a year ago, and mainly serve
only as a poor man's UPS. Only the 8895-WFJ is actually seeing some
mobile use once in a while.
Hope this helps,