This product is a 9V battery energiser, which operates on a 9V dry battery. 12V operation possible with adaptor cable (not included). High output power, low power consumption. Indicator light to control fence and battery condition. Lightweight, portable and easy to handle. Suitable for small and medium fence lines without vegetation, especially for cattle and horse containment. Will energise up to 3km of single line fencing, (depending on load conditions). Three years guarantee. Maximum voltage: 9400 volts. Voltage @ 500 ohms: 2600V. Input (load) energy: 0.25 joule. Output energy: 0.17 joule.