The Dragonfly Solar candle is due to their flicker effect indistinguishable from a real candle.Thus, it is the perfect solution for atmospheric light without the need to worry about children or animals.To recharge the built-in 3.6V lithium ion battery, the solar candle simply turn around. The solar panel on the bottom of the candle provides the necessary energy.Once you put the candle back in the right position and the solar panel is cover, the light goes on automatically.Please remember that before first light and at least an 8-hour UV radiation suspend recyclable.After charging, you have a burn time of 4 hours.