HoootCell 4LR44 DOG COLLAR BATTERIES 5 COUNTS - POWER & SAFE BATTERY FOR YOUR PETS 4LR44/ A544 Battery, also called K28A 476A PX28A L1325 battery, is the perfect power solution for your pet collars! With a shelf life of 3 years, the 6V Alkaline battery 4LR44 ensures long-lasting performance and reliable power supply. Say goodbye to frequent battery replacements as our A544 Battery boasts low self-discharge, providing extended usage time for your dog collar devices. 4LR44 6V battery is widely compatible with various pet collars, making it an ideal choice for pet owners. A544 Battery high performance and compatibility with invisible fence collar batteries, make your life more convenient.