Li-Ion Power Tool cells work great for RC!

[BrianG]

The A123 cells are able to charge in less than 5 minutes actually, but they (DeWalt) must not be taking advantage of that. Maybe it reducing the cell life to charge at a high rate all the time.

I'm hoping they will be 3Ah cells. 36v will mean I'll be able to make two 18v (5s) packs from one module. 2.4lbs for a 36v pack means 1.2lbs for one 18v pack.

About the weight: a sub-C cell weighs 65g. An A123 M1 cell weighs 99g. It takes three sub-C cells (195g) to equal the voltage/capacity of one M1 cell - as long as the M1 cells are ~3Ah each, otherwise two in parallel would be needed and would weigh more...