So far so good nice cool, heavy duty.

I bought it to go camping, it fits more than a 40qt and cools very well. The only bad thing is that the battery lasts less than 24 hours at the recommended temperature.

Great cooler, well built and not cheap construction. I got the first one and all was well till I updated the firmware then things changed. I had a brick. F1 error and I was stuck. Anker sent out another one when I sent it back and thus far things are golden. I will NOT be updating the firmware until I know that it will not brick the cooler.

After a month, we can truly say that we have put this cooler through a very thorough testing and are delighted.

I've had the everfrost 30 for a few weeks now and used it a lot over the last 7 days. I have to say that I am impressed. It kept all my food and drinks cold. I will never have to worry about getting ice again and I love that. The build quality is great. The ability to charge via AC, DC or Solar makes charging convenient. Getting it cold doesn't take long. Since there is no ice, there is a lot of space for food and drink. It was 90+ at the race track this past weekend and it kept everything cold. Now the cons. It's heavy. When full I don't find it any heavier than my typical coolers with ice but it's still heavy when empty. It's big. I can't get it in my trunk from the back but have to slide it in through the back seat. Not the end of the world and worth the hassle but still not great. The battery won't last the 2 days that the website says it will. I'd get about a day and a half. Stiff good but not what is reported. They must have set it up and not open the door for 2 days.

Overall though... I would recommend. Especially when it is on sale.