Although the manufacturer has charged the battery, the electric levels will have dropped when you receive it. Please charge it for a full day (6 to 8 hours) to optimize performance. The surface of the solar light must be kept clean. If not, this will influence the efficiency of charging. Cleaning can be done with a soft non-abrasive damp cloth. How to use the Solar light Open the cover, push the switch to the 'ON' position, replace the cover and position the light in a sunny location.