Optex LSH-20 D Cell Lithium Alarm Battery 3.6V

Product Description

The OPTEX LSH-20 is a D cell lithium battery rated at 3.6 volts, designed to power alarm systems, security sensors, and other low-drain electronic devices that demand long-term, reliable energy output. Lithium chemistry provides stable voltage delivery over the battery's service life, which makes it a preferred choice over alkaline alternatives in critical alarm and detection applications. This battery is sold individually and is installed by security technicians, electricians, and HVAC service professionals who maintain battery-backed sensors, detectors, and control devices.

The LSH-20 is suited for residential and commercial alarm systems, fire detection panels, intrusion sensors, access control devices, and any low-power electronic application requiring a D cell form factor at 3.6 volts. Its lithium chemistry performs reliably across a wide temperature range, making it appropriate for installations in unconditioned spaces such as attics, crawl spaces, and mechanical rooms where temperature swings are common.

Key Features

• 3.6 volt lithium chemistry delivers stable, long-duration power output
• D cell form factor fits standard battery compartments in alarm and sensor devices
• Lithium construction performs in wide-temperature environments including unconditioned spaces
• Low self-discharge rate extends shelf life for emergency and backup applications
• Sold individually for single-unit replacement or restocking

Compatibility

Designed as a replacement D cell lithium battery for alarm systems, security sensors, and electronic devices requiring a 3.6 volt power source in the D cell form factor.

Installation Notes

Battery replacement should be performed by a qualified technician following the device manufacturer's service procedures. Power down or disarm the associated alarm or sensor system before servicing the battery compartment to avoid triggering false alarms or interrupting monitored circuits. Dispose of spent lithium batteries in accordance with local regulations, as lithium cells are classified as hazardous waste in many jurisdictions. Do not mix battery chemistries or install alongside alkaline cells in the same device.