Tamiya female (battery side) to Spektrum lead female plug (charger side)
Amazon.com: Zeee 7.2V 4200mAh NiMH Battery with Tamiya Connector High Power for RC Car Truck Associated HPI Losi Kyosho Tamiya Hobby(2 Pack) : Toys & Games
Modelsport 3000mah 7.2v Battery Pack and eN20 Quick Charger Set for RC Car Tamiya Plug