The S40 with 0.4 Joules of stored energy powers up to 25 miles / 80 acres and comes complete with solar panel, battery and leadset.  Great solar choice selection for wildlife exclusion

Clean Fence: 25 miles / 80 acres?
Typical Fence:? 5 miles? / 30 acres
Stored Joules: 0.40 Stored Joules????
Output Joules: 0.26 Joules

• ?????Turn on and forget – with automated battery management, energizer will continue to work for up to 3 weeks without sun
• Quick to install – can be easily set up in any location and moved about for strip grazing and better pasture management
• Water resistant case, with convenient carry handle and built in lightning protection – designed to be left outside, rain, hail or shine. Keeps stock contained in all weather conditions
• Multiple power options –
  1. Wildlife Mode pulses fast day and night.
  2. Full Power Mode pulses fast during the day and slower at night, conserving power when animals are less active.

• 360° mounting on steel posts for correct orientation toward the sun - allows the energizer to be mounted on a steel post that is already part of the fence line, regardless of which way the post is facing
• Includes leadset and battery

 
Check it out below: