Very powerful 12V rechargeable battery unit, allows for alternative operation with 9V dry battery, also 230V mains operation by power adaptor (not included). Allows for solar assistance. 12V full discharge protection. Steplessly variable output energy. Digital display for output and battery voltage reading. Two separate LEDs to control fence and battery condition. Suitable for all-round farm use, strip grazing and paddocks, ideal for sheep containment. Will energise up to 30km of well insulated single line fencing (depending on load conditions). Three years guarantee. Maximum voltage: 12600 volts. Maximum voltage @ 500 ohms: 5400V. Maximum input (load) energy: 5.4 joule. Maximum output energy: 3.0 joule.