Endurance solar fairy lights are designed for high performance with excellent longevity truly beautiful lights that are easy to install no mains wiring they recharge themselves during the day from solar power and automatically switch on for up to 12 hours every nightr the powerful 300mah polycrystaline solar panel is designed for all uk weather even in winter and even in the most rubbish weather that the uk can throw at us the panel can be simply detached from the lights and charged via u