Fast Shipping On All Items 30 Days Money Guarantee Customer Support Excellent Service 100% Satisfaction Satisfaction Guaranteed Solar Fan with Battery, Exhaust Fan for Greenhouse/Outside with Anti-Backflow Valve Specification 3.7 inches x 8.0 inches x 9.0 inches. Weight: 6.05 lb Item Description ?Solar Air Conditioner with Battery?Equiped with a Bifacial solar panel and a 3000mAh rechargeable battery, our exhaust fan provides extra circulation at night time for your houses. The battery works for up to 8 hours after full charged in sunlight, supports the ventilation during night time or cloudy day. The intelligent system switches the power supply mode according to the sunlight conditions. ?Bifacial Solar Panel?With the 16W transparent rear panel, the panel panel generate power from both sides (up to 41W), increases the efficiency of power generation by up to 130%. The panel supports well working of the solar exhaust fans and also the charging of the battery. The efficiency of the fan and the charging of the battery is affected by sunlight conditions, it will be reduced when the weather is cloudy. ?Waterproof Solar Fans for Outside?This solar fan is equipped with IP44 waterproof fan blades and 14.8ft long cable with a waterproof plug. High quality weatherproof greenhouse fan design prevents short circuit or damage and works well in harsh outside environment. ?Higher Airfolw?Enhanced blade and engineered motor maximise airflow at high speed. The airflow of the 8-inch fan is 220CFM, suitable for places up to 2190 ft such as greenhouses, chicken coops, sheds. ?Wide Use?This exhaust fan is easy to install and can be mounted in a window or wall. It is suitable to be used as a attic fan, also ideal for greenhouses, barn, garden sheds, shed vent, garage, chicken coop fan, animal houses, camping, caravans and much more. Is is the ideal solution for ventilation. Product Description 1 Cools Indoor TEMP 2 Prevents Mould 3 Improve Air Quality 4 Anti-backflow Valve How to Pick the Perfect Solar Exhaust Fan for Your Space Solar Panel Size 13.8*7.9 inch Solar Panel Size 13.8*7.9 inch Solar Panel Size 15.4*12 inch Optimal Room Size ?460ft Optimal Room Size ?1200 ft Optimal Room Size ?2190 ft Cable Length 14.8ft Cable Length 14.8ft Cable Length 14.8ft Max. Airflow 46 CFM Max. Airflow 118 CFM Max. Airflow 218 CFM Applications Greenhouse, Chicken coops, Pet/Tree house, Kitchen, Toilet, Camping, Garden shed Applications Greenhouse, Chicken coop, Pet house, Bathroom, Attic, Garage, Shed, Boat Applications Greenhouse, Chicken coop, Pet house, Bathrooms, Attics, Garages, Sheds, Boats How long is the cable? This solar panel is equipped with a 14.8ft long cable, and the fan is equipped with a 3.28ft one. What is the capacity of the battery? The solar fan is equipped with a 3000mAh battery, works for up to 8 hours after full charged in sunlight. The intelligent system switches the power supply according to the sunlight conditions. How does bifacial solar panel works? With a 25W front panel and a 16W transparent rear panel, it generate power from both sides (the rear panel can generate power from reflected light), increases the efficiency of power generation by up to 130%. How does it work at night or cloudy day? The intelligent system inside the battery box could switch to battery power if the solar panel voltage drops too low. The efficiency of the fan and battery charging is affected by sunlight conditions and is reduced when the weather is cloudy. What is the size of the fan and the solar panel? The fan is 7in in diameter; the size of the panel is 15.4in x 12in. Return Policy ? We guarantee against any defective or misrepresented products. The original shipping label must be sent back to us to validate the return. A full refund can only be issued during the first 30 days upon receipt of the product. ? Returns will be voided if the product is mishandled or physical damaged by customer. ? Buyer will be responsible for all kind of return shipping/shipment to the seller for resolving the problem. ? Returns made for all non-defective, undamaged products are subject to a 15% restocking fee. Shipping and handling fees are absolutely non-refundable. If an item is returned to us due to an address issue, we do charge a reshipping fee to reship. If you would like a refund, there will be a 15% restocking fee applied. ? All returned products need to be assigned an RMA # (Return Merchandise Authorization #) prior to return. Please contact us through's messaging system to obtain an RMA# for the return. Any returned product without an RMA # on package will not be accepted or processed. ? Please contact us before returning. Feedback ? We appreciate your feedback and our system will automatically leave feedback for you after bid ends. ? Please contact us through message center if you have any problems, we will always try our best for 100% customer satisfaction. Payment Options Shop With Confidence