2 pack of 6-Volt Lithium Batteries.

Compatibility

Deluxe Bark Control Collar (PDBC-300-20)
UltraLight™ Ultrasonic Bark Control (PUSB-150-19)
Bark Control Collar (PBC19-10765)
In-Ground Fence™ System (PRF-3004W-20)
In-Ground Fence™ System (PIG00-13661)
Ultralight™ Add-A-Dog® Extra Receiver Collar (PIG19-10761)
Deluxe Ultralight™ Add-A-Dog® Extra Receiver Collar (PIG19-10764)
Wireless Pet Containment™ System (PIF-300-21)
Wireless Pet Containment™ System Add-A-Dog® Extra Receiver Collar (PWF19-10762)