Amazon.com: Blomiky 2 Pack 7.4V 1100mAh 8.51Wh Li-ion Rechargeable Battery with SM-2P Plug and 2 Charger Cable fit for H101 H103 RC Boat RC Car Vehicles Toy Force Battery 2 : Toys
14500 7.4v 500mAh SM 4P Plug Battery For AUG M249 QZB95 Electronics 52*28*14mm | eBay
Amazon.com: Rechargeable Lithium Ion Battery Pack - VIDAR 7.4V 2600mAh High Capacity Li-ion Battery Pack with JST PH2.54/2P Plug-in(Customizable) for Electronics,Toys,Lighting,Equipment : Health & Household
Valken Li-Ion 7.4V 3000mAh Split Airsoft Battery (Small Tamiya) - US Airsoft, Inc.
RadioMaster 7.4V 2S 5000mAh Li-Ion Battery for TX16S - XT30
18650 7.4V 6000mAh Li-ion Battery for solar street light – Melasta