Description Polysilicon solar panels have an efficiency of 20%. NiMH Aa battery: 600mah/1. 2v, this replacement has a bright warm white LED on top. Please turn on the switch when charging, the switch is at the bottom. Diy absorbs solar energy during the day and turns on automatically at dusk. Solar roof replacement requires at least 8 hours of charging time. It can be bright for 10 hours in summer and 5 hours in winter. A set of 2 replacement solar ceilingsApplication: Very suitable for all kinds of solar lights. Used to replace solar modules, used for defective solar modules. These replacement lamps are perfect. Save money because you no longer need to throw away all solar lights. Also includes batteries. Why not buy it now How to use 1. Slide the off switch to on. (This light has a light sensor, it will turn on at dusk) 2. According to the solar specifications, charge it for more than 8 hours. Solar panel: polysilicon 25% efficiency Aa Ni-MH battery: 600 mA/1. 2 V Led: 1 Leds Light color: warm white Material: Plastic Charging time: 8 hours Working time: 10 hours in summer, and 5 hours after fully charged in winter.