Turmera 12.8V 14Ah 4S2P 32700 Lifepo4 Battery Pack with 4S 40A BMS Balanced for Electric Boat and Uninterrupted Power Supply 12V - AliExpress Consumer Electronics
4S2P Battery Pack with Panasonic B Cells, 6.7Ah, 9.75A, 14.4V, Cuboid Shape, Customizable - 18650 Battery Pack - Lithium Ion Battery Pack - Voltaplex