... driller, muller, sandblasting machine and punching machine, lawn mower, air compressor, etc. 7> Electronic field: TV, DVD, video games, ... will turn off automatically. 3. Overload protection: Overload protection to prolong time. 4. Over heating protection: Temperature above ... Charger protection: Constant current and voltage charging.Third: How to connect?Please assure the Inverter Power is switch off ...