Amazon.com: Power Queen 12.8V 12Ah Lithium Iron Phosphate LiFePO4 Battery, IP65 Protection Class, Deep Cycle Battery with Built-in 12A BMS&2000+ Long Cycle Life Perfect for Kid Scooters, Power Tools, Marine Boats :
Battery 12V 12AH
Sunlight SPA 6-12 6V 12Ah F1 Replacement Battery | eBay