Amazon.com: Power Queen 12.8V 50Ah LiFePO4 Battery, 640Wh Backup Lithium Battery, Over 4000+ Rechargeable Cycles, Lightweight Replacement Battery for SLA, Widely Used in Wireless Lawn Mover, Electric Scooters : Automotive
50 Ah (45 Ah Upgrade) 24 Volt UB12500 AGM Mobility Scooter & Power Chair Battery Pack (Universal Battery) - Monster Scooter Parts