To keep optimal punch in electric batteries, you need to discharge them at a minimum of 20 amps. If you solder 10 1157 bulbs to two peices of brass tubing or something similar, then you just wire a dean or Tamiya connector to the end, plug it into your batteries until the bulbs start to dim. When you click your easy start on, it pulls much more than 1.2 amps out of them and batteries perform best if discharged at the same rate they will be used. I discharge my mod motor batts for my B4 at 30 amps each time and they have incredible punch.