Solar Universe India DC 12V Table Fan - 9 inch for Solar Home Lighting Systems or 12V Battery Operation, This is a DC12V powered Table Fan with 3 blades in the 9-inch size. It can run via an external 12V battery (not included) which can also be charged via a 12V solar panel (not included). It can run for upto 12 hours on a 12V-7.5ah battery (commonly used in motorbikes) and delivers sufficient RPM and fan speed. The size of the fan is 9 inches and it comes with a small wire for interconnection. This type of fan is usually used in bank rooms, godowns, security cabins, small rooms, construction sites and farm houses where electricity is not readily available. It can also be connected to any 12V solar home lighting system or kit.