... is off ? Simply connect your fans to our Fan-Mate.Fan-Mate is a small solar system developed by Foshan ... other home devices as well ( computer, TV, standing fan, etc)Hereby is the chart on how to match up ... a system to fit your demand:Fan Mate—350W (2 Fans) BackupTime(Hour)Battery( unit) ... /200AH×1240Wp/18V×1Solar generatorInvereter:DC12V-350W,controller:12v/20A Fan Mate-Power supply