Originally Posted by
carpetburner
Must be a Euro thing.. No one at my track runs that.. Although on some older platforms that was the thing to do before the proliferation of large capacity 4s came to market. Maybe in Europe 4s batteries are harder to get?
It's because EFRA hasn't still hasn't homogenized any 4S packs so on EFRA events you have to run 2x2S packs. On club level most people run 1x4S since it's easier to handle and cheaper.