Gardman L6021 Solar Spot Lights Twin Pack Powerful solar powered spotlights create interest and atmosphere in the garden, perfect for accenting trees, shrubs and garden features. Easy to install as they require no wiring and because they use solar power they cost nothing to run. During the day the solar panel mounted on top of the light converts daylight into electricity and recharges integrated AA batteries. At dusk the lights turn on automatically and run on electricity stored during the day. Lights will operate for up to 8 hours at night if fully charged during the day.