GNB batteries are top tier lipo's at an excellent price!
Available from 1S to 6S, you'll find the performance as good or BETTER than any battery you've flown before.
The current Rotor Village favourite is the GNB 1500 4S 120C. It comes down cooler, with significantly less sag than lipo's flown in the past. And if 6S is your thing, there's several unbeatable options there as well!