High Tech MS-4 & MS-5 Collar Keys B3V1A-Replacement Batteries

High Tech Pet Battery Replacement for the MS-4 and MS-5 collar keys Compatible with MS-4 and MS-5 collar keys Set includes 2 B3V1A batteries Each battery lasts approximately 3 months Easy, tool-free installation Designed specifically for High Tech Power Pet Automatic Door Mount Keep the collar keys for your High Tech Power Pet Automatic Door Mount functioning at its best with the High Tech MS-4 & MS-5 Collar Keys B3V1A-Replacement Batteries. This set includes two B3V1A batteries specifically designed for compatibility with MS-4 and MS-5 collar keys, not the discontinued MS-2 or MS-2A. These long-lasting replacement batteries have an approximate lifespan of 3 months, ensuring your pet's collar key remains operational for an extended period. It is recommended to purchase more than one set for your convenience. Installation is a breeze with a simple snap-in-place design that requires no power or hand tools. You can effortlessly keep your High Tech Power Pet Automatic Door Mount functioning smoothly for your beloved pet. Please note that these batteries are for use with your High Tech Power Pet Door collar only and cannot be used to power your electronic pet door. For powering your pet door, check out the High Tech charger and battery kit. Need to power your pet door? Check out the High Tech charger and battery kit.  Features: Designed for MS-4 and MS-5 collar keys, ensuring compatibility Set comes with two high-quality replacement batteries Long-lasting batteries with a lifespan of approximately 3 months Effortless installation, simply snap into place Ideal for maintaining the functionality of your High Tech Power Pet Automatic Door Mount