The Premium Umbrella comes with a 110V power charger for indoor display, cloudy days and whenever extended hours needed. (It is an AC/DC/Solar power sources design with replaceable, rechargeable battery.) The Solar Lighting System uses a lens with a special internal reflector that disperses light evenly for maximum light output and run time. The low maintenance of the solar lighting that charges by day and turns on automatically by night. (Switch can be set to disable) Lights are manufactured from durable, nylon resins for weather resistance, and the pre-assembled solar panels are designed to protect from harmful elements such as rain, moisture and condensation.