ENERGIZER A23BPZ Battery Alkaline Manganese Dioxide 12 V,

Miniature alkaline batteries are optimal power for keyless entry and garage door openers. Multi-drain batteries utilize innovative cell chemistry, resulting in the best characteristics of both High Drain and Low Drain systems in one battery type. 0% Hg on all zero mercury cells. Reliable, dependable power. Used in heart rate monitors, keyless entry, glucose monitors, toys and games.