Koolatron Thermoelectric Iceless 12V Cooler/Warmer 29 qt (27 L), Electric Portable Car Fridge w/ 12 Volt DC Power Cord, Gray/White, Travel Road Trips Camping Fishing Trucking, Made in North America

Cools quickly and remains so for long trips

This travel refrigerator chills down pretty fast if you add an AC power adapter and cool it in the house (or hotel room) before heading out on the road. The 12V connection in the car takes much longer but if the unit is already cold it does a good job keeping things cool.

I purchased this cooler to store my young daughter's insulin when it is hot outside and we are at soccer practice or wherever. She has type 1 diabetes and insulin breaks down (goes bad) over 90 degrees although i've had it spoil in the mid to high 80's. We live in Southeast Texas so it gets very hot. I've now actually used it for other things as well and, so far, have been pleasantly surprised.Size: I initially was just looking for a small one to store medicine, but I couldn't really find a size I liked so for the price I purchased this one. I'm glad I got the bigger size. We have a weekend place about an hour away. If I bring food back/forth, I usually do a small cooler. This weekend I used this cooler instead. It was perfect. I was surprised to fit 1 gallon of milk, a jug of OJ, a package of steaks, a regular sized sour cream, 2 bags of grated cheese and a can of biscuits (plus 2 vials of insulin). The cooler fits nicely in several places in my Tahoe: behind driver or front passenger seats, in between 2nd row captains chairs, between 2nd row captain chair and 3rd row seat or that tiny space between 3rd row seat and rear door/hatch. It is still easy to carry when full and has a nice handle that folds down flat.Function: Example 1: 2 hour soccer practice with outside temp of high 80's. I plugged in the cooler and put in her insulin and a bottle of water (pre refrigerated about 15 min earlier). Turned off the truck. After practice I was amazed at how cool it was inside the cooler. My daughter was happy to have a cold bottle of water and I was happy to have no worries about her insulin temp. Example 2: trip to 2nd house with 1 hour stop. Outside temp was only mid 70's but it was very sunny so inside my black Tahoe I'd guess it was at least 80. Had the food described above, no ice. Arrived at house about 2 1/2 hours later. Then I forgot to take the cooler inside before I spent over 2 hours talking to neighbors. Husband moved cooler to house porch, now unplugged, and it sat there for another 15-20 minutes. I thought for sure my meat would be warm but when we took it all out it was as cold as it was when I out it in there.It is now so nice to not have to remember to grab ice and cooler on hot days out with my daughter or have my food get watered down with melted ice when traveling.Other comments:- I have not measured the temp yet but plan to buy a thermometer to keep inside for reference.- as another reviewer has mentioned, the grill covering the fan does bend in easily and stops the fan. I make sure when packing a truck load that nothing is pressing against the fan grill.- I've not tried the warm function. There is no hot/cold switch. Hot/cold is determined by how the plug I'd inserted. Plug has blue dot and red dot which you line up with an arrow when attaching the plug. I'm a little worried I'll not pay attention and insert it for hot when plugging in. I store the power cord inside the cooler when not in use.- I've never had it running with my truck off for more than about 2 hours. Have not had an issue with my truck battery.Shore up the fan cover and provide a built in thermometer (I'll pay more) for 5 stars.

This is such a great item!! For all sorts of reasons …. but if you’re going to leave this cooler plugged in running 24/7 (while it’s off too) then i recommend getting yourself a power I nverter for it. If your spending the money for the cooler then put the cost of an inverter with the cooler cost because it doesn’t make sense not too!! My battery did die twice! from leaving the cooler plugged in over night ! The first time was accidentally but the second time was bc I wanted to see if me leaving it plugged in was really why my battery died the first time! Lol needless to say…it was deff bc the cooler had been plugged in annd running all while the car was turned off. Was fine when the cars running but who wants to leave their car running 24/7! I deff don’t recommend that!

This is my 3rd one of these. I just can't seem to make 1 last more than 11 years. I use mine in my semi truck and it runs 24/7 except when I am home from work. It fits very well due to the slim profile and keeps drinks and food cold. It cools based on ambient temperature, usually 30 degrees colder than ambient.It will also warm. I have never used this feature.It runs on 12 volt and has a pretty good amperage draw.