Working Time: Replacement Solar Lights - Upper 8-10 Hours Charging Time - Over 10 Hours Running Time. Replacement: These solar lights are designed to replace defective solar panels. The solar lamp replacement cover is compatible with solar lamps. Size: 4 spare solar lights measuring 8 cm in diameter. This 25% efficiency polysilicon solar spare cover includes a 600 mAh / 1.2 V NI-MH AA battery. Lighting: Warm white LED, ideal for night lighting. Usage: This DIY light cover features a switch on the bottom, and should be turned on while charging. This lid light will automatically turn on and off, transforming it into a solar light / solar garden light. Perfect for various solar lanterns. Note: All measurements are manual, please allow for a 1-3cm error. Due to lighting and display differences, there may be some color variation with the physical item received.