Skellyo, what runtimes are you getting and are you running your 2s in series or parallel or just one pack????
I haven't run out my first pack yet and I easily have over 10 minutes on it. The single 2S pack has enough punch to put the E-Revo on its lid on a hard launch. I just don't see the need to run the packs in parallel and definitely not in series except for perhaps a speed run or two.