#12415 NORM 4-firmw: XO-4 battery drain issue

Zarro Boogs per Child bugtracker at laptop.org
Fri Dec 21 22:09:38 EST 2012

#12415: XO-4 battery drain issue
           Reporter:  greenfeld            |       Owner:  rsmith                           
               Type:  defect               |      Status:  new                              
           Priority:  normal               |   Milestone:  4-firmware                       
          Component:  embedded controller  |     Version:  Development build as of this date
         Resolution:                       |    Keywords:                                   
        Next_action:  diagnose             |    Verified:  0                                
Deployment_affected:                       |   Blockedby:                                   
           Blocking:                       |  

Comment(by tonyforster):

 2.8mA is two orders of magnitude too small to explain the symptoms. It
 would take 1000hrs or 6 weeks to discharge the battery. It would require
 in the order of 100mA to explain the symptoms.

 Testing SKU292, after 5 hours off, the battery indicator says 98% 4:05
 remaining. ie OK

 Testing with no battery and ammeter on external DC supply, multimeter is
 accurate to +-20mA which should be accurate enough, get 0+-20mA for 5
 trials each of software shut down, short press shutdown and long press
 shutdown. ie OK

Ticket URL: <http://dev.laptop.org/ticket/12415#comment:4>
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