Converted into electrical energy by the solar panel on the top. During the day, it is converted into electrical energy by the solar panel and stored in the battery. At night (you can also block the solar panel with your hand to switch to night mode). If the solar panel no longer charges the battery, it will automatically turn on and at the same time the cup lamp will start to rotate. Suitable for use in courtyards, lawns, balconies, etc. No additional wiring or power supply, no installation, placed directly on the lawn, automatic charging during the day and automatic lighting at night.