Its advantages are low noise, small size and simple installation.
The disadvantage is that it is driven by the original car battery. A pair of 150A batteries can generally last for two or three hours, and the time is slightly shorter. When using, you should look at the time to avoid insufficient battery power on the way and increase battery life.
Ordinary car batteries are starter batteries with short cycle life and need to be replaced every year.
The installation price is 3000- 10000, and there are many brands. The cooling effect is related to the service life and price.