Battery Charger SY-CH-2061A 1, For engine start battery. 2, Select 110V or 220V input. 3, Select ... ambient working temperature: -40°C~+60°C, it can be used in the moist environment of 98%RH non condensation.2 ... synchronizer, genset controller, power factor regulator, fuel solenoid,battery charger for engine start battery, actuator, speed controller, load sharing panel and so ...