Yea, a few cycles will get it up to capacity, but boats pull some real juice and I dont see 1200 mAh lasting. My brushless outlaw jr only gets about 6-7 mins outta 3s 2200mAh pack. I would look at zippy flightmax from Hobbyking. You could probably get something like 3800mAh lipo for next to nothing! And I dont see it too much heavier.