[snellemin]

I tend to disagree with the raw power of the A123 vs Lipo or nanotech.

My old drag racing GTP ran just as hard on 4s2p A123 vs my competitors that ran 6s 5000mah lipo. To safe some weight, I also ran 6s1p to make up for the voltage drop and still beat those that ran 6s lipo.

Pro's of A123:
A123 will outlast lipo.
A123 will put out all the amps your need.
A123 can handle heat and cold way better vs any lipo.
A123 can be charged in 5 minutes.

cons of A123:
Weight
Package format