... 2. protection function 3. inverter charger 4. CE low frequency inverter,inverter charger 24v 4kwmain application1> Transport equipments: ... , etc. 7> Electronic field: TV, DVD, video games, power amplifiers, auto equipment, monitoring equipment, terminal equipment, server, intelligent ... current and voltage charging.Usage:Please assure the Inverter Power is switch off before connection of the battery. ...