Ikea's Solvinden Solar-powered Post, 3pc, Aluminum Color- 2 Pack No cost for electricity. The solar panel converts sunlight to energy. Easy to use. No cables or plugs are needed. 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. Includes 1 rechargeable battery (AA 1.2V) that stores energy from the sun. The battery can be replaced and last about 2 years.