This energizer can be operated with rechargable internal 12V batteries powered by high-efficiency monocrystalline panels to ensure maximum power transmission.

Features:

Low impedance
Excellent for containing horses, cattle, pigs, sheep, goats
Integrated 5.... (read more) 0 watt monocrystalline solar panel
110 volt battery charger port
Power supply adapter included
Large easy-to-see pulsing power indicator
Tough impact-resistant ABS plastic case with T-post mount and side mounted power terminals
Large, easy-to-grip power terminal knobs
Fence and ground connection leads included
7 amp rechargeable battery
Power Source: 12 Volt Battery operating from solar energy
Distance: Up to 20 acres
Stored Joules Rating: 0.34
Output Joules: 0.25
No Load: 10,000 V
1000 ohm: 4,800 V
500 ohm: 3,000 V
Watts Used: 42mA