Xtrema , Hyperion or FMA ??

[jhautz]

I'd avoid the 977 unless you are only charging 2s and 3s packs of 2500mah or less. Other than that its severely underpowered and I have read that there are actually lipo manufactures that wont cover warranty on their batteries if that model or any older MRC chargers are used. The 977 maxes out at 3A for a 2s pack and 2.5A for a 3s pack and cant charge lipos with cell counts over 3.