... input voltage range from 90v to 280v 2)4 steps AVR, 220v+_10% 3)super wide input frequency range from 40HZ ... , wind generator, solar system and so on,8) 4 steps AVR, 220v+_10%, three steps to increase the voltage, one step ... Short time,fit for those areas with frequent power off Maximum charging current:25A,16) Battery can charge automatically. Home invetrter ...