0.5 joule battery energiser Suitable for 1.5Km of fence line or the perimeter of 4 acres 3 year warranty Comes with free 9V battery, earth bar, output leads, neon tester and 25 screw-in insulators Suitable for strip grazing systems The Forcefield B50 battery fencer provides 0.5 joules which covers an area of 4km (12 acres). It will operate with either a 9V or 12V battery. The B50 is micro-chip controlled and provides 3 power settings, normal, turbo and night. This allows for energy saving or higher performance if required. The fencing unit and battery is provided in a sealed container to IP65 standards which ensure long working life. It is easy to transport install and operate. The fencer comes with a 3 year warranty, free 9V battery, earth bar, output leads, neon tester and 25 screw in insulators. This fencer is ideal for use with a wide range animals and with multiple stands of fencing wire, tape or rope. This battery fencer is ideal for strip grazing or as a permanent fixture. When not in use remove battery and store in a cool dry area.