Description Specs Gens Ace Redline Series 4S1P 130C 6000mAh Hardcase LiPo Battery Pack with 5.0mm bullet. Consumers trust the Gens Ace name to deliver the dependability and high performance they expect. The Gens Ace 130C 4S1P 6000mAh 15.2V LiPo battery pack has a high-capacity, high-discharge rate that gives you the power and run-time you expect from all Gens ace.