The BA40 is a battery energizer for fences of up to 6 km, easy to move and to connect. This energizer has 2 different modes. In mode 1 the energizer provides a standard pulse with maximum Joules. In mode 2 the energizer provides 1 pulse of 100% followed by 3 pulses of 50%. It means the battery lasts much longer and you are still sure to have sufficient power on your fencing. A red LED will indicate when the 9V battery needs to be replaced. The energzier has built-in lightning resistance and is supplied with a connection cable set. Excluding battery.