Pel 402 Unigiser Fencer has 2.7 stored joules and 2 output joules.
Fences up to 30 acres and powers 12 miles/20 km of wire. 
Pel 402 Unigiser Fencer needs 1 x 5 ft earth bar.
It is solar compatible and main/battery operated (12v tractor battery).
Pel 402 Unigiser Fencer includes battery leads, mains power adapter and indicator lights (voltage and battery).
There is a two-year warranty (excludes lightening strike and water damage).