[Openec] RFC: One-Wire-Filesystem (owfs) for charging battery on XO and openec, (long)

[Frieder Ferlemann]

Hi Richard,

Richard A. Smith schrieb:
> The official OLPC battery deployment does include NiMH.
> 
> LFP is the preferred battery technology and will be the bulk of the
> deployment.  LFP is superior in almost every aspect.  However, LFP has
> almost no long term history.  There is also some question of if there is
> enough Lithium powder to make the quantity of batteries that our goals
> involve.
> Because of the lack of history we cannot just drop NiMH from our battery
> list.  ~10% of the battery shipments will be NiMH.  If for some reason
> the LFP batteries have some sort of issue we will ramp up NiMH as
> production as fast a possible.
> 
> Both the Laptop and the Bulk Charger will have to support NiMH
> technology for the foreseeable future.

thanks! Two more questions along that line: Are there already
application notes/preliminary data sheets about LFP available,
and: would the DS2756 Fuel Gauge IC be used for LFP battery
packs as well?

Greetings,
Frieder