Sundanzer Solar-Powered Refrigerator - 1.8 Cubic Ft., 24.5in.L x 27.5in.W x 36.5in.H Requires 110 Watt solar panel minimum, 100 Ah battery (or larger) and 15 Amp charge controller. Operates on 12V 0r 24VDC deep cycle battery (not included). Designed for off-grid solar applications where grid power is not readily available or unreliable. Uses environmentally-friendly CFC-free refrigerant.