The product can be only charged by USB interface ; ordinary battery version can only be charged. 

The product is fitted with battery charging indicators; the light turns red when product is being charged and will turn green when fully charged. 

The product features always on mode and night light mode (Auto). Please make sure the switch is at the Auto position in using Auto function which can satisfy the demand in different times. 

Charging Time: 2 hours,. Using Time (full charged): 20-25 days: Auto-Mode 6-18 hours: ON-Mode 

No Wiring, No Cords, No Electricity,automatically turn on when motion is detected within a 5-6 ft. range