6135-99-789-2390 CR2032 Lithium Coin Battery

A CR2032 battery is a 3V lithium manganese dioxide coin-shaped cell commonly used to power small, low-drain electronic devices.

Key Product Features

• Reliable 3V Power: Delivers a stable 3V output with a typical capacity of approximately 210–240 mAh.
• Extended Shelf Life: High-quality cells maintain power for up to 10 years in proper storage, with a low self-discharge rate of about 1% per year.
• Wide Temperature Range: Operates effectively in extreme environments, typically ranging from -30°C to +60°C (-22°F to 140°F).
• Leak-Proof Construction: Innovative sealing technology prevents leakage to protect your expensive electronics.
• Safety Features: Often available in child-resistant packaging to prevent accidental ingestion.

Common Applications

This versatile battery is a direct replacement for many household devices, including:

• Security & Entry: Car key fobs, garage door openers, and AirTags.
• Medical Devices: Blood glucose meters, digital thermometers, and oximeters.
• Computing: PC motherboard CMOS/BIOS batteries and calculators.
• Electronics: Watches, LED lights, small toys, and remote controls.

In the military and tactical sectors, the CR2032 battery is a critical power source primarily for small electronic accessories, optical sighting systems, and portable lighting. 

Common British Military Applications

You will find this specific NSN listed in the technical manuals for various UK-specific equipment:

• Bowman Radio System: Used as a "keep-alive" memory battery in the HHK (Handheld Keyloader) and other cryptographic components of the Bowman tactical communication suite.

• Infantry Weapon Sights: Powers the electronics in the LDS (Lightweight Day Sight) and the FIST (Future Infantry Soldier Technology) thermal imaging sensors.

• Royal Navy Avionics: Used for CMOS and BIOS memory backup in various radar and sonar processing units on Type 45 destroyers and Type 23 frigates.

• Survival Equipment: Found in certain models of Personal Locator Beacons (PLBs) issued to RAF pilots and Royal Navy personnel.

Optical & Sighting Systems

The most widespread military use of CR2032 batteries is in reflex and red dot sights used by armed professionals for rapid target acquisition. 

• Aimpoint Sights: Several professional-grade optics utilize CR2032s, including the ACRO P-2 reflex sight and the Micro T-2. The Aimpoint PRO (Patrol Rifle Optic) also relies on this battery to provide up to 30,000 hours of illumination.
• Trijicon Optics: The Trijicon SRO (Specialized Reflex Optic) and certain RMR Type 2 reflex sights are powered by a single CR2032.
• Sig Sauer Electro-Optics: The ROMEO5 Gen II and ROMEO4T-PRO series use CR2032 batteries to power their reticles, often featuring night vision-compatible brightness settings.
• Holosun Collimators: Many Holosun red dot sights, frequently used in tactical configurations, are designed specifically for this battery type. 

Night Vision & Helmet Accessories

While many primary night vision units use larger batteries (like AA or CR123A), the CR2032 powers several critical peripheral components. 

• Helmet Mounts & Accessories: Specialized mounts and switches for Night Vision Goggles (NVGs) use these coin cells for low-profile power.
• Illumination Controls: Some optics featuring "Night Vision" (NV) settings use the CR2032 to maintain ultra-low reticle brightness levels for use with goggles. 

Tactical Lighting & Communication

• LazerBrite Tactical Lighting System: This modular LED system uses CR2032 batteries to provide visible or infrared (IR) light for signaling and marking in the field.
• Tracking & Asset Management: Ruggedized tracking tags (similar to civilian AirTags but often integrated into military gear management) utilize CR2032s for long-term location monitoring.
• Backup Electronics: Digital lasers, small tactical lights, and backup digital sights often use these cells due to their 10-year shelf life and reliability in extreme temperatures.