[Trac #543] Critical low battery can't be charged with ac power.

[Zarro Boogs per Child]

#543: Critical low battery can't be charged with ac power.
------------------------------+---------------------------------------------
 Reporter:  arvinliu          |        Owner:  rsmith 
     Type:  defect            |       Status:  new    
 Priority:  blocker           |    Milestone:  Trial-1
Component:  hardware          |   Resolution:         
 Keywords:  relnote, battery  |  
------------------------------+---------------------------------------------
Comment (by dds):

 I had a similar problem with a Q2B76 B1 laptop.  When I got it, I upgraded
 it from an unknown older version to build 303 / Q2B76.  Probably the older
 version could charge the battery, because when I got the laptop the
 battery worked for more than an hour.  After the battery drained, it
 refused to recharge.  The battery LED remained dark, and the laptop
 wouldn't work without a AC power for more than a minute.  I upgraded to
 Q2B81.  After the first reboot the battery LED changed to orange.
 However the battery wasn't recognised:
 {{{
 $ cat /sys/class/battery/psu_0/capacity_percentage
 capacity_percentage: No such device
 $ cat /sys/class/battery/psu_0/status
 absent
 }}}
 After an hour's charging and a second reboot, the battery LED remained
 unlit, and the above commands gave the same results.

-- 
Ticket URL: <http://dev.laptop.org/ticket/543#comment:21>
One Laptop Per Child <http://laptop.org/>