[Power] replacement RTC batteries for XO-1 and XO-1.5; which are recommended?

[Paul Fox]

nicholas wrote:
 > Sorry but this might be worse than useless info.
 > 
 > OLPC 1.5 and later RTC batteries appear to be CR2032 cells w/welded
 > tabs and heatshrunk with a connector.

why would you say that?  it's definitely not a CR2032.  it's an ML1220.

    http://wiki.laptop.org/go/Fix_Clock#Check_the_battery_and_holder

 > 1: Salvage the old connector
 > 2: Order some generic parts
 > 3: Sit down and a skilled soldering iron wielder can spend an afternoon doing a dozen or so batteries laptops at a time (spend less than a half a second on each tab, waiting for the first tab to cool before going on to the second).
 > 
 > Helpful--or not :)

not terribly.

paul

 > 
 > 
 > ----- Original message -----
 > > Does anyone have recommended RTC battery model number(s) handy for XO-1
 > > and XO-1.5?      In context with these very useful RTC (Real-Time-Clock on
 > > motherboard) rescue/maintenance tips here:
 > > 
 > >            http://wiki.laptop.org/go/Fix_Clock/Background
 > > 
 > > Evidently some schools prefer a clean start, replacing all their RTC
 > > batteries now that XO-1 laptops especially are approaching a decade of
 > > life.      Depending what RTC prices and Minimum Order Quantities are
 > > forthcoming in 2016+ of course -- both for smaller & larger operations --
 > > perhaps Nathan has an idea?
 > > 
 > > (Less urgent, but recommended RTC battery model numbers for XO-1.75 and
 > > XO-4 would be wonderful too, if handy?)
 > > 
 > > *Aside: http://wiki.laptop.org/go/Reuse_checklist
 > > <http://wiki.laptop.org/go/Reuse_checklist> is an excellent more
 > > comprehensive list of refurbishing tactics for those interested!*
 > 
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 > http://lists.laptop.org/listinfo/power

=---------------------
 paul fox, pgf at laptop.org