[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.
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 Reporter:  arvinliu             |        Owner:  rsmith 
     Type:  defect               |       Status:  new    
 Priority:  high                 |    Milestone:  Trial-1
Component:  embedded controller  |   Resolution:         
 Keywords:  relnote, battery     |  
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Comment (by rsmith):

 Replying to [comment:25 fiorella]:
 > We charged the unrecognized batteries using a 7.5 V - 230 mA DC power
 supply until they reached around 5.3 V. At this point the batteries were
 recognized by the laptopts, so we continued charging using laptops with
 firmware Q2B81. Now those batteries are working fine.

 Thanks for the info.  This is a B1 correct?  If so thats exactly what I
 would expect.  The cutoff for trickle charge is 5.2V but B1s do not have
 trickle charge hardware so you have to get the batteries over the hump.

 I'm going to write up a wiki page describing all the battery issues and
 solutions.  I'll close this bug when that page is done.

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Ticket URL: <http://dev.laptop.org/ticket/543#comment:26>
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