The LED light bulb consumes up to 85% less energy and lasts 10 times longer than incandescent bulbs.1 rechargeable battery (AAA 1.2V) that stores energy from the sun is included. The battery can be replaced and lasts for about 2 years.Position the solar panel for maximum exposure to sunlight.Recharging time is 9-12 hours in sunlight, but over 12 hours on a cloudy day.When the battery is fully charged, the product will give full light for approx. 12 hours.The battery should be replaced only with a rechargeable battery of the same type and capacity.IKEA recommends LADDA rechargeable batteries.Approved for use as outdoor lighting,Built-in LED light source.LED life approx. 20,000 hours.This product bears the CE mark.On-off switch.This solar-powered product lights up automatically when the environment gets dark and the switch is on. It never shines in daylight.