Imagine the flexibility of using the same energiser out the back paddock or around the house yards. Thunderbirds new range of mains / battery fence energisers, deliver flexibility to cover all your fencing needs. Powers up to 7.5 km & 15km, with 8,000 volts output - .7 & 1.5 stored joules Digital LCD display ( 3 functions displayed ) Mains or Battery powered, ( A.C. Adaptor and D.C lead supplied ) Optional solar kits are available Vacuum Sealed transformer, for better reliability and longer life Quality Australian made product, with 2 years warranty Lightning spark gap fitted - 6 months warranty against lightning strikes Tough, weatherproof O-ring sealed enclosure.