DYNAMITE:DYNC0166 EC5 Battery Jumper by DYNAMITE $8.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This is a Dynamite EC5 Battery Jumper Loop. This part allows the dual battery EC3 ESC to run on a single battery pack. Just plug the jumper into the second and unused ESC connector, and the ESC will operate on a single battery.