Amazon.com: Zeee Premium Series 4S Lipo Battery 5200mAh LCG Hard Case Batttery Height 37mm 14.8V 120C with EC5 Connector for RC Car Truck Tank RC Buggy Truggy Racing Models (2 Pack) :
Powerhobby 4s 14.8v 5200mah 50c Lipo Battery w XT60 + Traxxas Plug Hard Case LCG - Powerhobby.com