Model B3V1A Battery 2-Pack for MS-4 and MS-5 Digital Ultrasonic Pet CollarIMPORTANT: Please make sure to always use genuine High Tech Pet ® replacement batteries. There are inexpensive knock-offs with battery chemistries that can damage the collar circuitry. Damage from use of off-brand batteries will void your product warranty. New B3V1A Lithium Battery 2-Pk Genuine B-3V1A Batteries Safely Power Your MS4 and MS5 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. Also sold in 1-pack, 6-pack and 12-pack. 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.
