This BESTEK 300 Watt power inverter is a compact device that you can easily bring with you in the car. The construction is well built and solid with an aluminum case acting as a heatsink. There is a built in fan on one side which turns on when you turn on the unit and draws 200mA with no load. The 2 AC outlets are measured to output 119V AC. I have tried using it to power various tools and devices and works fine. There are also 2 USB charging ports which has one with constant 2.4A output good for charging larger devices such as a iPad or tablet, and the other is variable amperage (0-2.4A).
The built in protection this offers is very good. It offers both input and output protection. If you plug in a device that draws too much current, the inverter will shutdown and the green LED will turn red. If your input 12V does not supply enough current, it will also shutdown and LED turns red.
Overall, for the price this is a good unit and does what it’s advertised to do. You can also check out my video review on this.