#6092 HIGH Never A: Battery Charging problems. (Collector bug)

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#6092: Battery Charging problems.  (Collector bug)
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  Reporter:  rsmith               |       Owner:  rsmith        
      Type:  defect               |      Status:  new           
  Priority:  high                 |   Milestone:  Never Assigned
 Component:  embedded controller  |     Version:                
Resolution:                       |    Keywords:                
  Verified:  0                    |    Blocking:                
 Blockedby:                       |  
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Comment(by rsmith):

 Replying to [comment:7 frankprindle]:
 > Richard, I couldn't run "1w-init bat-charge" from the USB keyboard
 because it would just run one cycle and then came back with 2 "ok" prompts
 (no clue on why).

 Oh yeah.  I've hit that as well.  Thanks for reminding me.  I need to make
 my test case and file a bug.  Seems to be an issue with OFW and usb
 keyboards.  It sometimes thinks a key is pressed.
 If you do it enough times it eventually runs.

 > The results were pretty discouraging. It charged at 1.2A for about 2
 minutes or less. When the voltage reached 7.1V, the next line said 7.5V
 and the charging had stopped (0 ma.) So the total capacity of the battery
 seems to be around 40 mah. Not a very useful battery,

 Ok. Thats almost exactly like the other unit I have.  What I think is
 happening is that there is a poor connection somewhere in the battery and
 after a few minutes of charging it heats up and goes high resistance..

 > Is there a way I can RMA just the battery? So far no sign on this XO of
 the sticky keyboard problem (oddly, as weighed by fedex, this also weighs
 a pound more than the unit I returned, and it feels a little heftier
 too!!!)

 Its heavier?  Thats odd.  There's no official way to RMA just the battery.
 I'd like to get your battery though.  Let me discuss with others on Monday
 and see if I can work something out.


  and I would hate to send the whole thing back and get a second
 replacement with a good battery and another bad keyboard (I've seen
 reports on the olpcnews forum of this happening).
 >
 > Or maybe you could send me a known good battery, I could swap it in, and
 if it behaves normally, I can send you back the rogue battery; if it still
 misbehaves I can send you back the good battery and RMA the whole XO as a
 total charging system problem.

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Ticket URL: <http://dev.laptop.org/ticket/6092#comment:9>
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