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1.Adopt 12 inch leafage，when feebleness wind work,it will work about 8 hours.when strong wind work ,it will work about 5 hours,and emergency light at the top of the fan,it's power is 13W PL,it will work about 10 hours.
2.There are 2 pcs 6v 4.5AH acid battery inside;
3.solar panel:5W, the battery will be fully charged after being charged for12-16hours by solar panel.
