custom lithium battery pack is rechargeable and cost-effective
Amazon.com: Blomiky 2 Pack EL-6P 9.6V 800mAh Li-ion Battery 15-DJ02 15-DJ03 Fit for 9120 S913 S916 S911 S912 9123 9112 1/12 Race Car EL-6P 9.6V Battery 2 : Toys & Games
Amazon.com: Black SM6P Plug 800mAh 9.6V 20C Rechargeable Lithium Battery with Charging USB Cable for High Speed RC Car S911 S912 9115 9116 9120 Remote Control Toy or RC Boat Plane Drone
Airsoft AEG PEQ NiMH Charger or Battery Connecter w/ Mini-Tamiya Plug – MaximalPower
Lifepo4 9.6v 8ah 35c Battery 3s 9.6v 8000mah High Rate 25c 30c Lipo For Aircraft Rc Remote Control Airplane Drone Boat Car Atv - Rechargeable Batteries - AliExpress
9.6v 800mah Li-ion Battery For 9115 9116 S911 S912 9912 Rc Truck Rc Car Battery 16500 9.6v 800mah Battery El 6p/6p-sm Plug - Parts & Accs - AliExpress
Hfc1450-35+9.6v+500mah+LIFEPO+Battery+Sm2p+Positive+Plug+for+RC+Car+Truck+Boat for sale online | eBay
Matrix High Output Nunchuck Type Airsoft NiMH Battery (Configuration: 9.6V / 1600mAh / Small Tamiya), Accessories & Parts, Batteries, NiMH / NiCd Batteries, Custom Type - Evike.com Airsoft Superstore
Amazon.com: Lancer Tactical Nimh Airsoft Battery Compatible with Lancer AEG Airsoft (9.6V, 1600 mAh Nunchuck Mini Tamiya) : Sports & Outdoors
Matrix High Output Small Type Airsoft NiMH Battery (Configuration: 9.6V / 1600mAh / Small Tamiya), Accessories & Parts, Batteries, NiMH / NiCd Batteries, Small Type - Evike.com Airsoft Superstore
Amazon.com: GEILIENERGY 9.6V NI-MH Rechargeable Battery Pack with Standard Tamiya Connector for RC Car, Robots and OTC Genisys 239180 & EVO Scanner(1 Pack) : Health & Household