the Fantom lipos are Intellect 3800's they are awsome packs and very competitive to other manufactured lipos at a reasonable price, Jeff has 3800 25c and 35c packs!!! check it out
http://www.fantomracing.com/ you won't be disapointed!! here is a test result from them
sec: 418
AgVlt 7.36
AIR 6.1
this at room temp. cycled on a GFX at a 35amp discharge