Amazon.com: CHINS LiFePO4 Battery 12V 50AH Lithium Battery - Built-in 50A BMS, 2000~5000 Cycles, Perfect for Replacing Most of Backup Power, Home Energy Storage and Off-Grid etc. : Automotive
Cspower LiFePO4 12V 50ah Battery/12V 50ah Lithium Battery - China LiFePO4 Batteries and Li-ion Battery Pack
12V, 50Ah LFP Battery (PVC, BLF-1250A) – Bioenno Power