Review on 750 Watt Power Inverter with LCD Screen by Battery Tender: Vehicle Power Adapter with 115V AC and 5V USB Output by Greg Quinit

I'm not an inverter expert so enlighten me if you want. First, 120 watts at 12 volts is 10 amps. This device requires a 15A fuse. I believe this is to improve the capacity and safety of the facility. Many factory 12 volt outlets are protected by 10 amp fused circuits. Never install a larger fuse than specified for your vehicle. I used this on a Polaris RZR and hooked it up to a charger I installed that is protected by a 15 amp fuse. The lines are correct. This device appears to consume a 12 volt electrical load even when not using a 110 volt power supply. The cooling fan always runs when connected to 12 volts. I will be sure to disconnect it from the 12 volt supply when not in use with the engine running. I don't want to end up in the middle of nowhere with a dead battery.