... technology, selects imported military-grade elements, leading technique... Series switching power supplyEV battery charger uses high-frequency PWM technology, selects imported ... over-voltage, over-current, short-circuit and overheat4.EMI input filter in design, conforms to the electromagnetic compatibility standard5.Small volume ... Moisture:≤95%(No dew)7.Tempreture:-40~+55 Series switching power supply