The LaserMax Guide Rod Battery Pack is an essential component for your Glock Sig Sauer or Springfield XD equipped with a LaserMax Guide Rod Laser sight. Designed with a nominal voltage of 1.55 volts and a rated capacity of 20 mAh this battery pack ensures your laser sight operates at peak performance. Composed of high-quality silver oxide these button cell batteries are lightweight and reliable offering flawless functionality across a wide temperature range. Each pack contains a single LMS-319 size battery which is easy to install and replace. Although not rechargeable the LaserMax battery boasts a five-year shelf life making it a dependable choice for your laser sight needs. For optimal performance it is recommended to replace the battery annually. Always refer to the LaserMax Operators Manual or Battery Compatibility Chart to ensure the correct part selection.