Lectron Pro 14.8V 4S 5200mAh 50C Lipo Battery Soft Pack with XT60 Connector + CSRC adapter for XT60 batteries to popular RC vehicles - RC Car World (Hobby Shop + Tracks)
Amazon.com: Zeee 4S Lipo Battery 14.8V 6500mAh 80C Hardcase with Deans T Connector Compatible with RC 1/8 1/10 Scale Vehicles Car Trucks Boats Tank Truck RC Car : Toys & Games