The Gemini series from Hotline have proved themselves to be very popular. This is a dual powered energiser which can be run either from a 12v battery or from the mains making it a really versatile machine. This model has 0.8 OUTPUT JOULES which will power an 8km electric fence. Under normal line resistance levels of 500 Ohms it will still put a 4,200v pulse through the fence so it’s perfect for medium length horse fences. It will also power 3 poultry nets and up to 10 sheep nets. The mains adapter that’s included is a bit like a mobile phone charger and just plugs into the side of the energiser. Although the unit is fully water-proof and designed for being out in all weathers it must be housed indoors when plugged into the mains. It comes with all the required leads to attach to a battery and to an earth stake (not included) and to the electric fence line itself but as when it’s mounted in an outhouse the distance to the earth stake and the fence are variable, any additional insulated cable will need to be bought here. Ideal for the person who powers a remote fence during part of the year and likes the flexibility of powering the fence from the mains if it’s available at other times.