Features and Benefits 4 cell Lithium Polymer 3850mAh battery pack. 8C continuous discharge rate not to exceed 30 amps. Top quality cells with moderate discharge rates. Maximum burst of 46.2 Amps for 5 seconds is ok for every 30 seconds. Maximum charge rate 3.85 Amps. Dimensions: 36mm x 50mm x 140mm Weight: 400 grams