Amazon.com: Tenergy Battery Packs and Charger Combo, 7.2V 3000mAh NiMH Battery Packs with Standard Tamiya Connector and Fast Charger for Hobby Battery for RC Car, RC Truck, RC Tank, RC Boat :
How to charge RC batteries
Remote Control Car Charger | Battery Charger L6.2-2p | Ni-cd Battery | 7.2v 700mah - 7.2v - Aliexpress