The first one is the regular way most refrigerators operate with a compressor system. The other way is using a semiconductor type material that has no moving parts. The semiconductor type is the method that uses leasing power.
They are the choice for people who are concerned about the environment. Many of these battery-operated units can also use a gas such as propane to generate cooling. These units are called dual-powered. If you want to buy the best portable fridge then you can visit https://www.fitmy4wd.com.au/.
Many people who enjoy camping like this type of unit because they can utilize the gas for other purposes such as cooking or lighting. There are also units that have solar charging capability to help with power use.
No matter what type of refrigerator you use it will need to be placed on a level surface. Sometimes this is forgotten when camping and has caused poor operation.
Many of these fridges are finding their way into commercial use at motels and hotels, offices, and lunchrooms, as they are great space savers. They come with a number of options including adjustable shelves, ice trays, and pop or beer can slots. The price for these appliances can range from a few hundred dollars to over a thousand dollars. They are carried by most of the main department stores as well as home improvement stores. Deals can be had if you watch for the advertisement flyers. Check the manufacturer's warranty and compare different models. Make certain that the one you buy has the appropriate safety certifications in place. Underwriter's Laboratory (UL) will have a label on the back put there by the manufacturer to give you assurance of safety. Do not buy one without a label.