This is a very good 1000watts 12v modified wave inverter with a very good inbuilt charger, the inverter needs to be connected to at least a 12v battery for you to use it, Input voltage 12v. Output voltage 230v. Rated power 1000. Efficiency >80%. Durable metal housing provides advanced protection from drops and bumps. Integrated cooling fan helps reduce heat and prevents shortages. [Protections].Overload protection. Input over voltage protection. Over-temperature protection. DC 5V USB output 1000w DC 12V to AC 220V Low standby power cost Multiple safe protection High coversion effeciency(>70%) Universal output socket Intelligent cooling fan controlled by the workload This power inverter is extraordinarily designed for home use,which can convert DC 12V of portable power supply to AC 220V/230V and it works for almost all the household electrical resistive appliances such as tv, lights, phones, MP3/MP4 player,cell phone, laptop, emergency light, electric shaver, electric cooker,digital camera, digital video,CD/DVD player,XBOX/PS4 game player, ordinary electric lamps, bulb,fluoresent light,desktop computer, graphoscope,fax machines, printers, LCD TV, electric fans, cell phone chargers and so on.(Note:You need a bigger inverter to run electric appliances like including refrigerator, Ac, iron, microwave oven, induction cooker, electric drill,compressor,air conditioner,lamp, sodium lamp and so on