1. More than 2000 cycles 2. CE, ROHS, UL,SGS,PSE 3. Quick delivery 4. No explosion, ... , Start battery, backup/standby power, EV/HEV backup battery, E-bike/E-scooter battery, storage batter. Li-ion rechargeable energy now is ... parameterInput voltage: AC100V--240VOutput Voltage&Current: DC42V 2A/4AOur EquipmentsCertificates CE CERTIFICATE ROHS CERTIFICATE PSE CERTIFICATE