Desert cooler runs directly on a panel without a battery, and if you want to run it at night, add a battery. May God bless you. Those who call, please bid. The cooler runs on a 200W, 12V panel directly during the day. The price of the cooler without the panel is 1000 SAR. The price of the cooler with the panel is 1300 SAR. Serious buyers only, please don't waste your time.