VEVOR 12V Portable Car Refrigerator 16 Quart, -4°F to 68°F Mini Fridge with App Control, 12/24V DC & 110-240V AC Compressor Cooler for Truck, RV, Boat, Camping, Road Trips & Home Use - Grey

I bought the 15L (16qt) size, and have been testing it at home. Its intended purpose was to keep a few basics cold over a weekend camping trip, so I needed something that could last 48 hrs on a charged battery power unit.PROsThis device is efficient. For the geeks like me, it consumes about 25Wh/h. Running it off my 2kWh battery unit, it ran for just over 80h before depleting the battery (I had the temp set at 37F and it keeps stuff cold enough to give me an ice-cream headache if I drink the water too fast). I also have a smaller 300Wh power unit that can run the fridge for about 12 hrs, so that could come in handy for at least an overnight camping trip. One of the reviews stated that they ran it overnight on their car battery and everything was fine. I would not recommend doing that, after 8 hours the car battery would be depleted to a highly dubious point, especially if the battery is old and you really need that car to start the next day.I like that it has bluetooth app although that's functionally unnecessary - the controls on the panel are quite sufficient.Other reviews stated that it cools down very quickly. I found this also to be the case for mine, within 15 minutes it had dropped from ambient room temp to the low 40's.The capacity and dimensions are fine for smaller items - water bottles, cold cuts, condiments, pint-sized milk or creamer, produce in a bag, etc.I also like that it's very quiet. I saw another review where someone kept it under their bed, and was bothered by the noise. They must be an extremely light sleeper because I find that the device is whisper-quiet. Admittedly I live in a big city, and ambient noise is louder - I may update this review once I use it in a quieter location with less ambient noise. Also bearing in mind the device is brand new, and over time things can loosen up and get louder, so that's yet TBD.CONS: The container has enough space for short (weekend) camping trips, but the dimensions can be awkward - I like creamer in my coffee, and I buy it by the quart (box carton type). This does not fit in there standing up, and I don't want to lay it down and risk it leaking everywhere. So I either have to buy a pint sized creamer, or transfer some into a jar or other container that will fit. I consider this a "minor" problem, not a showstopper by any means, just a pet peeve.The controls are on top, facing up. If I'm going camping, I am usually packing duffel bags, tents and other gear at the same time, and this fridge needs to stay flat on the floor, so things get packed and fitted around and overtop of the fridge. The fridge itself is a sturdy build, and can easily handle the weight and knocking around of stuff on top of it, but there is a risk that control buttons could be inadvertently pushed. It would be disappointing to discover that the device switched off, or froze stuff, or warmed up after a long road trip to the destination. A flip-cover to protect the controls would be an easy product feature to incorporate.As mentioned, I set the device temperature at 37 degrees. If the container is mostly empty with just a few items in there, I see the digital readout temperature varies from 35 to 41 between cycling on and off. I'm not sure where the temp reading is being taken from, as I find it hard to believe that the cold contents of the fridge are varying in temperature the same way, it's far more likely that the contents remain at pretty much consistent temperatures. This is fine for me, but may not be ok for people who need finer temperature control. I have not independently measured the internal container temperature, and I expect that with more mass inside being kept cool, this fluctuation may level out - or maybe not, I have never packed the fridge to full capacity.Overall I think I made the right purchase. It's ideal for long road trips, or family camping trips. An affordable 300Wh battery-pack power supply can keep it running for about 12 hours after you've reached your destination. With a bit of wisdom, this will work for you just fine in these kinds of circumstances.