2 Pack Dog Collar Battery - New - Replcaes RFA-16, RFA-16-11, RFA16, RFA1611, RPX28, S1325, S28, S28PX, S544, V28PX, 1406SOP, 4G13, 4G13S, 4SG13, 4SR44, 544, PX28, PX28-S Amperage: 149mAh, Chemistry: Silver Oxide NEW Exell Battery Dog Collar Batteries