Ultrasonic Collar Batteries, for MS-4 and MS-5 Power Pet Door Collars

Designed specifically to prevent damage if accidentally installed incorrectly, This battery has been designed by the developers of the original Fully Automatic Power Pet Doors and safely powers your MS-4 and MS-5 electronic pet collars. Typically powers your MS-4 and MS-5 collar for 3 months, and has a shelf life of years.

NOTE: This battery is required for all of the new High Tech Pet MS-4 and MS-5 Digital Ultrasonic Collars. Please ensure that you order ONLY the B3V1A battery for your MS4 or MS5 collar.