Brand new in box, never used them, taking up space in my garage.
12V 200Ah LiFePO4 batteries are automotive grade LiFePO4 cells, which provide higher energy density, more stable performance and more energy, resulting in higher quality. The battery's internal cells are UL approved to ensure the highest level of safety, and the built-in BMS protects the battery from overcharge, over-discharge, over-current and short circuit and has an excellent self-discharge rate. Better than lead-acid battery with 5000+ cycles (10 times longer) and a 10-year service life compared to 200~500 cycles and a 3-year service life.