#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
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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 |
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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
93%.
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Ticket URL: <http://dev.laptop.org/ticket/9955#comment:13>
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