I have used other cooler/chest style fridges in the past but they had to be plugged into a dedicated 12v or 120v source. This always required a dual battery setup or careful planning to not allow food to spoil. I also had to have those other fridges permanently mounted. The Newair Jobsite Cooler made my life easier. The features I love most are 1) Ability to use power tool batteries that I already have. I use the Milwaukee 18V adapter and am able to use my 5.0ah batteries in addition to the Newair battery. The display shows voltage status for each battery (can mount two batteries inside). The cooler will operate for hours on a full charge. So load it up into the truck and take it with you lakeside or into work. 2) Lightweight and easy to move. The wheels are small - so they wont roll in gravel or sand very easily. It does roll great on flat surfaces. It has small handle cups on the sides to grip when picking up - I would love if these were a little deeper, but they are there and work. The folding pull handle is stout. 3) USB port to charge my phone off of the power source. Overall, I am really happy with the cooler. I was able to surprise my wife the other day - I was working out of town and bought her favorite ice cream from a mom & pop shop. Three hours later when I got home, the ice cream was still nice and frozen in the Newair Cooler (set to freezer temp).