Re (3): low battery shutdown

James Cameron quozl at
Wed Mar 2 17:55:43 EST 2016

On Wed, Mar 02, 2016 at 02:34:28PM -0800, peter at wrote:
> In a second test, using the machine without 
> external power,  the warningless shutdown happened 
> at about 25% charge level.

That's an improvement, but it could be random.

> From:	Richard Smith <smithbone at>, Tue, 1 Mar 2016 21:45:14 -0500
> > As others have said your battery is probably just showing its age.
> > 1.5 was built in 2010-2011 so unless you got a new battery its 5
> > or so years old.
> The machine was used when I purchased it about 
> three years ago.  Likely the battery was original 
> then and I have not replaced it since.  Yes, this 
> is probably the factory original battery.

Likely to be showing age.  The battery serial number has a date
embedded in the sequence, in case you want to be sure.

> > If you do run the capacity test I'd be interested in seeing your results.
> I've glanced at .
> Will have to read more carefully before trying 
> a "capacity test" and collecting any power log.

Wrong link.  For a capacity test, do not use Batman, but use
olpc-pwr-log from the Terminal activity.

> FWIIW, a full charge in the battery still runs the 
> machine for more than an hour.

That doesn't sound like much.

> Any comments about having the battery rebuilt 
> by a local shop vs. trying to buy a replacement?

Discussions on this have ensued on a private mailing list of
volunteers, hopefully they'll post here some day!

James Cameron

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