Lithium Master 12V 55Ah Li-ion Battery + Charger is a state of the art rechargeable battery pack made with Lithium Iron Phosphate cells designed for 12V devices. - Newegg.com
LFP22-1255 LiFePO4 Li-Iron 12V 55AH Deep Cycle Battery
Banshee 12V 55Ah Lithium Battery Rechargeable LiFePO4 3000 Deep Cycle
12V 55AH Lithium Battery Replacement for FirstPower LFP1255 - Walmart.com
12V 55Ah LiFePO4 Lithium Iron Phosphate Deep Cycle Battery | Aegis Battery
Banshee 12V 55Ah Lithium Battery Rechargeable LiFePO4 3000 Deep Cycle
Mighty Max Battery ML55-12LI - 12 Volt 55 AH Deep Cycle Lithium Iron Phosphate (LiFePO4) Rechargeable and Maintenance Free Battery - MightyMaxBattery