Hzs-1280 pro 12.8v 100ah lifepo4 lithium battery. it features premium grade a lifepo4 cells, delivering 1,280wh (1.28kwh) energy capacity for solar systems, backup power and off-grid applications. the integrated smart bms (battery management system) provides intelligent battery protection and helps safeguard against overcharging, over-discharging and short circuits. designed for dependable long-term operation with a 10-year design life. nominal voltage: 12.8v. capacity: 100ah. energy: 1,280wh. battery type: lifepo4. cell grade: grade a. smart bms protection. 5-year warranty.