The PEL S500 Integrated Solar Fencer is a portable, intelligent solar stripgrazer fencer. It is a powerful .5 output joule fencer that will power up 5km of tape or polywire (8 acres). Its large 3 watt solar panel will keep the battery fully charged at temperatures of 8-10 degrees. The PEL S500 Integrated Solar Fencer can be mounted on post or PE710 galvanised stand/earth unit. The battery lasts 14 days in darkness. This product comes with a 3-year guarantee.