MBS800 Multi Power Fence Energizer - Heavy Duty Electric Fence Charger for Farm, Ranch & Livestock Protection | Weatherproof & High Voltage Security Fence Controller for Animals & Property Safety

This compact Energizer contains 8 Joules of stored low impedance power. Powers up to 90 miles / 520 acres of clean fence. 

Additionally, this fence energizer is versatile and can be powered with 110v - plugin power, or with a 12v battery. It can also be outfitted with a solar panel, allowing the solar panel to recharge the battery eliminating the hassle of carrying the battery to and from a recharger.