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 :
PS-12120 12V 12Ah General Purpose VRLA Battery | Power Sonic
12V 12Ah Lithium Ion Battery | 2500-7000 Life Cycles &10-Year lifetime