#9955 NORM 1.75-fi: charging terminates before 100% capacity is reached

Zarro Boogs per Child bugtracker at laptop.org
Wed Feb 8 03:57:34 EST 2012

#9955: charging terminates before 100% capacity is reached
           Reporter:  Andy Pei             |       Owner:  rsmith       
               Type:  defect               |      Status:  new          
           Priority:  normal               |   Milestone:  1.75-firmware
          Component:  embedded controller  |     Version:  not specified
         Resolution:                       |    Keywords:               
        Next_action:  test in build        |    Verified:  0            
Deployment_affected:                       |   Blockedby:               
           Blocking:  10229                |  

Comment(by rsmith):

 Replying to [comment:12 greenfeld]:
 > With Q4D02 (stock EC code) + 11.3.1 os26 we report the primary XO
 battery as being 100% charged once charging is complete.
 > However once the charger is unplugged, we immediately drop down to
 reporting the battery's actual(?) capacity, which for non-fresh batteries
 be around 90-98% instead of than 100%.

 I think this is probably due to issues with kernel's olpc-battery driver
 that makes upowerd compute the incorrect energy capacity.  I've attached a
 patch that I think should fix that.  Please test.

 >  Immediately plugging the charger back in does not charge the battery
 (showing a green battery LED state), but doesn't force the state-of-charge
 back to 100% either.
 > I'm not certain if this is the intended behavior.

 Yes.  That's intended.  It will only restart charging once you drop below

Ticket URL: <http://dev.laptop.org/ticket/9955#comment:13>
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