Generac 6178 200-Watt Portable Power Inverter

Generac 6178 200-Watt Portable Power InverterThe good:

The power it produces is fairly clean. It puts out between 116 and 117 volts at 59.9 Hz. The spacing between the outlet and the USB port allows you to plug in a power brick as well as a USB device.

It will charge apple products, and it puts out the 2.1 amps as advertised.

When hooked up to a battery, it will put out 200 watts continuous and will sustain the peak load of 400 watts for a little over one second before tripping the overload.

The bad:

Generac cut some major corners in the design of this inverter. Instead of having a plug connector at the back of the unit (as other brands do) for the interchangeable hook-ups (cigarette lighter and battery leads), they have studs and screws. The cable hook-ups are rigid, which doesn't allow the wire to sit comfortably at the back of the unit.

This inverter does not work as advertised when you are using it inside your car. There is a throttle built into the adapter, which limits pull to 80 watts. My car has a 12 amp fuse (standard for all cars) for the cigarette lighter circuit, so I should be able to pull up to 144 watts let's say 120 watts just to be safe. The 80 watt limit falls short of my laptop's 110 watt pull when charging the battery while it's running. This causes the unit to beep then cut power. Once this has happened, the power has to be re-cycled manually.

The cooling fan is remarkably loud. At 1 foot, it will put out about 60 dB.

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