#9251 NORM Not Tri: EC fails to clear full flag in certain low voltage cases
Zarro Boogs per Child
bugtracker at laptop.org
Fri Feb 13 16:21:43 EST 2009
#9251: EC fails to clear full flag in certain low voltage cases
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Reporter: rsmith | Owner: rsmith
Type: defect | Status: new
Priority: normal | Milestone: Not Triaged
Component: embedded controller | Version: not specified
Keywords: | Next_action: test in build
Verified: 0 | Deployment_affected:
Blockedby: | Blocking:
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When a battery (any battery) has a voltage low enough to activate the
trickle charger (< 5.35V) there are cases where the EC will fail to clear
the full flag and thus the charging stops once the trickle phase is over.
There is not enough energy in the battery to power the XO form more than a
few minutes after you disconnect external power. Thus the EC never has a
chance to detect that the battery is really empty.
The result is that the battery is stuck in a cycle where the EC will never
charge it beyond the trickle phase.
This is fixed in firmware q2e32
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Ticket URL: <http://dev.laptop.org/ticket/9251>
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