About Product:Product attributes brand YS protection type Short Circuit overcharge overdischarge overload charging time 6-7USB number of interfaces 4 ripple and noise 60db product certification UL CE FCC ROSH PSE weight 7.4kg overall size 328*221 * 263mm output frequency 50-60 warranty for one year standard type American, British, European, Australian, British, Sino-Indian and South Non-standard battery type lithium iron phosphate battery working environment 328*221 * 263mm product series armor warrior display mode LCD digital display applicable scope household appliances