The Xstop® BX050D has three ways to supply power：12 volts Battery/20w Solar panel/Adapter.

High-Performance Electronics With 9, 500 Volts Output Voltage, Stored Energy Of 0.6 Joules, Practical. On/Off Switch Led Control Light High Protection Technology Quality At A Bargain Price: High-Quality And Efficient Electric Fence Energiser At An Unbeatable Price Strong All rounder: Combined Device For 9 Volt & 12 Volt Operation Suitable For Many Animal Species: Horse, Pony, Heron, Cattle, Pig And More Just Add A 9V Battery: An Earthing Rod And Connection Cables Are Included. To Use A 12V Battery Please Purchase A 12V Battery Connection Kit.