Works in winter. A properly positioned solar panel will allow this product to operate in typical winter conditions. *No mains. This light is solar powered and does not require mains power. * Energy saving technology. Maximize brightness in summer and double the runtime during shorter days. Easy to install: The outdoor solar lights can be mounted on the wall with the provided wall plug and screws in seconds, no cables or wires required. Please ensure the item has been exposed to direct sunlight all day so that it can absorb more sunlight when charging. Eco-Friendly Solar Security Lights: Solar lights with rechargeable battery allow the solar lights to be continuously illuminated for a longer time to meet daily lighting needs. And since they are wireless, you can install these lights anywhere: outdoor gate, driveway, fence, patio or garden. Solar Circulating Charging & Wide Application: This solar wall light uses solar power and can be recharged by solar energy. Suitable for porch,