4LR44 Alkaline battery is especially suitable for high to medium drain battery operated devices. With improved performance, it gives you longer lasting power for today’s popular portable devices. Size:13*25mm Capacity:150mah Equivalent to: 4LR44, PX28A, A544, 28PXA, 476A, 4G13, GP476, K28, V28, PX28AB, L1325, 1414A, V4034PX, PX28L, K28L, L544, L544BP, V28PXL, 2CR1/3N, 2CR1-3N, CR28L, 1406LC, 2CR11108 Application: Dog Bark Collars, Dog Training Collars, Dog Fencing Collars and all other devices that requires this battery size