I've been testing this cooler for a few days. At first I connected it at home to a 12V power supply to see how it works and learn about the features.
The settings are very simple: you select the set temperature with the up/down arrows, you can go all the way to -4F. It can be set to Celsius by following a procedure. I believe it works internally in Celsius, because when you change the settings sometimes it could jump by 1 or 2 Fahrenheit depending on the number. Anyway you don't need so much fine grained control.
I connected it for the first time and filled it up with water bottles, I was able to fit 10 16oz bottles. I set it to 34F to avoid the water freezing. The display showed 80F, then compressor started and was able to reduce the temperature to 34F in a few minutes. But it was not real, only the walls got cold, the water was still at room temperature. Then the temperature went up a few degrees and the compressor started again. I realized that this way would take a long time cool down the water bottles, so I set it to 10F. This time it took a couple of hours to get to that temperature but still the water was not cold. Finally the water got cold after 4 hours, it never froze. Then I set it back to 34F and had it running for 3 days non stop. The compressor started and stopped every so often. All the times I checked the water was cold.
Now for the road test I started with cold water, that is what I recommend. We had a road trip last week, we put it in the rear of our Rav4 (see pics). Something interesting is that the front has vents on both sides, that allows to put the cooler next to a wall and still have air circulation. We had cool refreshments all the trip.
The only annoyance we had, which is not related to the cooler, is that our car doesn't have a 12V outlet permanently on. When we leave the car the cooler looses the power. I will see if I can change the circuit to be fully energized. And talking about that, the cooler has a battery protection system, which will automatically turn off when the battery is low. It can be preset in the front panel to 3 settings.
Something that had me confused is the strap: it comes with clips in both ends but the holes in the cooler are very thin. The instructions are not very clear also, I figured out that I needed to remove the clips and use only the strap through the slits (see pics)
What I like:
- Very quiet
- Don't need to carry ice.
What I don't like:
- No much room, probably good for 2 people or maybe 4 only carrying drinks