Ni-MH battery 221 3000mAh, 4.8V, JST SM 2-pin | AMPUL.eu
BATTERY, NIMH 4.8V, USB MINI B, LIBRA/ELITE | Zefon International
Amazon.com: 4.8V 2400mAh NiMH Battery Pack Rechargeable AA Battery with SM-2P Connector for RC Car RC Truck Tank 2 Pack with USB Charger : Toys & Games