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Amazon.com: 4S 18650 Battery Holder Case Box for 4X 18650 15V Li-Ion with 6" Wire Leads by Envistia Mall : Electronics
Tenergy 7.4V Li-ion 2200mAh Rechargeable Battery Module with PCB : Toys & Games
Amazon.com: Rechargeable Lithium Ion Battery Pack - VIDAR 7.4V 2200mAh High Capacity Li-ion Battery Pack with JST PH2.54/2P Plug-in(Customizable) for Electronics,Toys,Lighting,Equipment : Health & Household
Amazon.com: 3.7V 3000mAh ICR18650 Rechargeable Battery Pack with SM 2P Plug : Health & Household
Amazon.com: 18650 DC 12V 5A 4000mah Rechargeable Lithium Ion Battery Pack for LED Strip and CCTV Camera, Portable Li-ion Battery Bank with Charger : Electronics