Lithium Ion battery 12V 20Ah - PowerBrick - high performance LiFe battery
Amazon.com: 48V Ebike Battery 20Ah LiFePO4 Battery Integrated 40A BMS Can Be Used for 350W 500W 750W 1000W 1200W 1500W Motors Equipped with 3A Charger Suitable for Electric Bicycle Scooter, Etc :