What is Needed


( mains or Battery )is the heart of any system, it makes a power source ( mains or battery), into a high voltage pulse shock on an electric fence. This shock is very safe to both horses and humans, as long as the system is erected correctly. All Gallagher energisers comply with all the British and European Standards.

Only use one energiser to an electric fence circuit, and try to locate it at the centre of your
fence run ( power is reduced at the end of a long run, its much better to create shorter runs, or complete a circuit ).

Mains energisers cost, on average less than £15 per year to run, battery powered energizers do, of course, cost a bit more


your energiser is essential. The ground which your horse is standing on must be a similar voltage to the energiser. A poor earth will not provide sufficient voltage, the more powerful the energiser, the larger the earth system must be, using larger and more stakes. For small portable energisers, a 0.5 mtr. long stake should be adequate, for a larger 12 volt powered unit a, 1 mtr. stake will be required. Mains units need much better earth systems usually two or three stakes, 2 or 3 mtrs long, spaced 3 mtrs apart and linked together with suitable cable. Dry conditions can also affect the efficiency of the earth, the deeper you get your earth stakes, the better.

Only use galvanised earth stakes, copper and metal corrosion will soon cause poor connections.


The power source is determined by the energisers location.

Mains power is the most reliable and cheapest form, but the energiser must be located in a weatherproofed building next to a mains socket.

Battery power is the next option, using a 12v battery, 9 volt fencer battery or sometimes 1.5v torch type batteries.

12v wet cell, batteries should be a leisure type, as used in caravans or on boats, these are designed to cope with being run down and recharged ( car type batteries need continuous topping up with charge). Disconnect batteries from the energiser when charging them. Due to their size and weight they are suited to semi-permanent locations.

9 volt dry cell, fencing batteries are designed for energisers, they can last from 3 - 6 months, according to their capacity. They are compact and lightweight, making them easily portable. Always use alkaline batteries as they are more reliable, and maintain their voltage longer than a saline type.

1.5 volt batteries can be used on smaller energisers but have a shorter life. Battery life can be dramatically reduced on poorly maintained, or badly earthed fence systems.

Gallagher offer most battery energisers with a battery save mode, this extends your battery life by up to 3.5 times, and is not offered on most other makes.

Solar power is also an option, energisers either have a built in solar panel and special battery, or you can buy solar panels to keep your wet cell battery topped up with charge. Solar power is ideal for remote areas.