12"16"18" AC/DC 12V Rechargeable Solar Fan with Lithium Battery USB Port

Emergency Stand 12" 16'' 18" Solar Fan with Battery for Home Using(1)400MM fan blades; 40 watt solar panel (2)Maintenance free batteries12V/10Ah (3)3 level controller; (4)Free 60-degree rotation, a wide-angle air supply; (5)Pitch angle of freedom of adjustment; The level of directional adjustment; (6)4-5 hours solar charging time fan working hours: 8-15 hours; (7)Case Material: PP+ Rail+Surface Treatment (8)Charging method: Solar power, AC110V/220V 3- level wind design, 1250RPM in high speed. A wide-angle air supply. The level of directional adjustment. It can also charge the battery while the fanner working with AC, the light will be twinkling when it's being charged, while the light will become off when it's fully charged. How does the solar fan work?                                                                       A solar fan is a mechanical fan powered by solar panels. The solar panels are either mounted on the device or are installed independently. Solar fans mostly do not require secondary power sources other than solar power, as most of them are used for cooling purposes during day time. Some types are also used for heating purposes .It runs the fastest when it is the hottest outside providing savings on air conditioning costs. Applications:Solar fans are mostly applied for residential cooling purposes and in some cases, for industrial applications.   Case MaterialPP+ Rail+Surface Treatment/* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1