When are these new HyperSonic bats coming out? They look cool and expensive. Do you guys really think they will be better than lipos? And it says you can charge them in as little as 15 minutes. It says they are lithium ion on their site, and the chargers and bats are really expensive. [link=http://a123racing.com/html/starterkits.html]Link[/link]

I have seen them in cars already. They have some impressive numbers. But a couple of drawbacks I see right off the top of my head. First is their size. Each cell is vary odd sized. They wont fit in normal situtations at the same voltage with nicd, nimh, and lipos. Also the voltage output. They are less than lipo. Since voltage is very important in the rpm department this would be a major set back. Now the good thing is the "C" rateing. 30 "C" is awesome. Also the chargeing is very good. However my lipos dont take that much longer to charge and they fit with higher voltage. The Li Ion battery is going to be one to watch for sure but right now the advantage goes to the lipo. Li Ion needs to work on the size of the cells. If they can get it down to the point of 4 cells in the size of a stick pack then they will have a possable cou on their hands. Right now I have 6 cell lipo packs that fit in a normal battery slot.

I will go lipo then. I use nimh right now.

I was always told to charge Li-Po no higher then 1C to avoid damage to the cells. 15 minutes seems much faster then an hour charge as far as im concerned.