Gums,
Pulling sources together, summary, to be confirmed of course:
1) The cells look much like the rectangular cells found in the traditional
nicad aircraft batteries, as does the overall enclosure.
2) It doesn't look like there is temp monitoring for each cell. I would
think that this less than optimal, as the cells have little thermal
mass and would heat up very quickly. This may not be detected in time
with a single / global enclosure sensor.
3) It does look like there is individual voltage monitoring for each cell.
4) It doesn't look like there is a separate charge circuit for each cell,
perhaps not ideal for such a sensitive application.
5) Very high charging currents are being used, together with a patented
charge algorithm based around a model of the actual cell. Not
clear if this takes account of cell aging over time, which could
invalidate the model. Also, cell production spreads and how the set of
8 is matched / selected / toleranced. If all cells are charged in series,
at high current, matching is not a trivial issue.
That's about it at the mo, but perhaps you can add more...