Packaging May Vary. Sold as 1 case: 6 boxes of 12 batteries. 10-year shelf life (each battery is individually date-coded to ensure freshness and guaranteed fresh for 10 years). Reliable operation in temperatures between -4˚F to 129˚F. Contains no added mercury – No disposal issues. Increased battery life = longer service life, lower operating expenses, and increased productivity due to fewer man hours replacing batteries.