The Know How 250 quad is pretty heavy for a racing acrobatic craft so I 've been looking for ...

[G+_Bongo Nutty]

The Know How 250 quad is  pretty heavy  for a racing /acrobatic craft so I've been looking for a lighter battery. The best one I've found so far is the Lion Power 3S 1500mah 35C. Lasts about 7 minutes