Long Lasting Power: PKCELL 4LR44 batteries have a long-lasting 6-volt power supply and is designed for long-term storage. It can provide reliable power for your gadgets in daily life or work and keep them fresh for years. Equivalent: 4LR44, PX28A, A544, 28PXA, 476A, 4G13, GP476, K28, V28, PX28AB, L1325, 1414A, V4034PX, PX28L, K28L, L544, L544BP, V28PXL, 2CR1/3N, CR28L, 1406LC, 2CR11108. We recommend that you keep your batteries in a cool place for optimal performance. Certified Safety: PKCELL A544 6V alkaline batteries are CE certified, REACH certified and US Mercury-Containing Battery Management. It has passed the all encompassing battery testing from performance, dimensions and environmental factors, and will not cause battery leakage. Widely Used: These dog collar batteries are suitable for Dog Bark Collar, Dog Training Collars, Dog Fencing Collars, Cameras, Car Security Alarm and all other devices that require this battery size, great value long term batteries for fa