5000mah - 2S - 7.4V with deans connectors. Here we have two Voltz RC car Lipo batteries.
HOOVO RC Battery 2S LiPo Battery 7.4V 5200mAh 80C Hard Case with Deans Plug Battery Replacement Battery for RC Car Truck Heli Aeroplane Rock Crawler Aeroplane Helicopter RC Car Truck Boat (2 Packs)
RC Car High Performance Battery 2S 2600mAh TPlug 2 Pieces for RC Car HS10422
AMZZN 7.4V 3000mAh 15C 2S SM-4P Plug Li-ion Battery with USB Charger for EC08 DE85 RC Car, Truck RC Ship RC Drone Engineering Vehicle Backup Battery
RC 2s 7.4V 650-6000mAh Lipo Battery 25-75C XT60/ T/ JST for RC Car Boat Drone
Zeee 7.4V 5200mAh 2S Lipo Battery T Plug 50C for RC Car Truck RC UAV Airplane