These Solar Mate lighting kits have no electricity costs & are easy to install. Great for lighting buildings without mains power such as sheds garages & summer houses. The Solar Panel charges a 12v battery which stores the energy during the day to then be used at night. The battery is not included but a leisure battery (12v 70-85 Ah) available from camping or car parts shops is suitable (prices start at around £50). The kits will work all through the year even in overcast daytime conditions. All kits give up to 7 hours of light per night. All kits include: Solar Panel Roof/wall fixing kit Energy saving bulb (s) Ceiling/wall bulb holder (s) Cable Wall switch Connectors & fuses 10 year warranty Full detailed instructions Product Area Illuminated Solar Panel No. of bulbs/holders Cable Length Solar Mate 1 16m² 5w 1 x 12v 5m Solar Mate 2 32m² 10w 2 x 12v 7m Solar Mate 3 40m² 18w 4 x 12v 7m