... density 2)High voltage. 3.)Pollution-friendly. lifepo4 battery 48v 20ah for panasonic cycleCapacity:8&10AhNominal Voltage: 3.2VCharge Term: CC ... anti-overcurrent, anti-overload3)Compose Type : Injection Technology to make battery more stable4)Certifications : CE,,FCC, RoHS,ISO90015) Long life ... consistency, low self discharge10) Light weight, small size lifepo4 battery 48v 20ah for panasonic cycle