Product review (1 stars): Device fails quickly.
This unit has reliability problems.  It has amply long cords and gets the job done, but only for as long as it stays working.  I've had two of these units.  The first one I bought was non-functioning as received. The seller quickly refunded my money.  My second unit, arrived working.  I've taken it on a two-month long road trip.  When I stop for just one night, I just leave the Engel refrigerator running overnight in my vehicle from an always-on 12 VDC outlet because that it too short a time to run down the battery.  For two or more nights in one place, which I've done a few times now, I bring the Engel inside and run from a 120 V wall outlet with this device.  Well, now my second device has failed after fewer than 100 hours of use.  I am going to find a 120 VAC to 12 VDC converter from an entirely different manufacturer.