CR1 2AA LITHIUM BATTERY VARTA

CR1 2AA LITHIUM BATTERY VARTA – Heavy-Duty Industrial Primary Power Cell

The CR1 2AA LITHIUM BATTERY VARTA (Type 6127) is a high-performance, non-rechargeable Primary Lithium Manganese Dioxide ( $text{Li-MnO}_2$ ) cell designed for long-term power backup and ultra-reliable electronic applications. Featuring a compact half-size AA cylindrical form factor ( $14.45text{ mm} times 25.3text{ mm}$ ), this 3V industrial cell delivers a nominal capacity of $950text{ mAh}$ . It is engineered to maintain constant output voltage across extended operational lifetimes.

Manufactured in Germany by VARTA Microbattery, the CR1 2AA LITHIUM BATTERY VARTA utilizes high-density bobbin cell construction sealed inside a corrosion-resistant metal case. With an extremely low self-discharge rate ( $< 1%$ per year at room temperature) and an operating temperature envelope spanning from $-55^circtext{C}$ to $+75^circtext{C}$ , it provides clean energy storage for critical systems where battery failure is not an option.

As shown in the product image, the cell features a distinctive green insulation sleeve marked with “VARTA”, the “CR1 2 AA” model identifier, “3V Lithium” voltage designation, “Made in Germany” origin stamp, and clear polarity markings (+).

Key Features of the CR1 2AA LITHIUM BATTERY VARTA

High Energy Density & Output Voltage (3.0 V): Provides a high, stable open-circuit and operating voltage of $3.0text{ V DC}$ with a nominal capacity of $950text{ mAh}$ .
Ultra-Low Self-Discharge Rate: Features a self-discharge rate of less than $1%$ per year at room temperature, enabling a shelf life and operational lifespan exceeding 10 years.
Wide Operating Temperature Range: Operates under extreme environmental conditions spanning $-55^circtext{C}$ to $+75^circtext{C}$ .
Hermetic Leak-Proof Construction: Built with an organic, non-corrosive electrolyte and a hermetically sealed casing to ensure safety and prevent fluid leakage.
Flat Discharge Profile: Maintains steady discharge voltage throughout continuous low-to-medium drain cycles.
UL Recognized Quality: Meets international safety and performance standards (UL MH13654 recognition / RoHS compliance).

Common Applications and Practical Usage

The reliability and long service life of the CR1 2AA LITHIUM BATTERY VARTA make it an essential primary power supply across industrial, medical, and security electronics:

SRAM & Memory Backup Systems: Supplies continuous standby power to maintain volatile RAM data, system BIOS settings, and real-time clocks (RTC) in PLCs and CNC machine tools.
Utility Metering Equipment: Drives smart water meters, gas meters, electricity monitoring skids, and automated meter reading (AMR) transceivers.
Alarm & Security Systems: Powers wireless security sensors, motion detectors, emergency beacons, and automated electronic locks.
Automotive & Toll Systems: Functions reliably in electronic road-tolling transponders, asset tracking units, and fleet telemetry modules.

Technical Specifications

The core electrical, mechanical, and environmental parameters for the CR1 2AA LITHIUM BATTERY VARTA are detailed below:

Parameter Specification	Technical Details & Operational Values
Component Classification	Non-Rechargeable Primary Lithium Cylindrical Battery
Primary Target Keyword	CR1 2AA LITHIUM BATTERY VARTA
Manufacturer / Type Code	VARTA Microbattery / Type 6127 (`CR 1/2 AA`)
Electrochemical System	Lithium Manganese Dioxide ( $text{Li-MnO}_2$ )
Nominal Voltage / Capacity	$3.0text{ V}$ / $950text{ mAh}$ (to $2.0text{ V}$ cutoff)
Battery Size / Form Factor	$1/2text{ AA}$ Cylindrical
Dimensions ( $varnothing times H$ )	$14.45text{ mm} times 25.30text{ mm}$ ( $0.57 times 0.99text{ in}$ )
Weight	Approx. $11.5text{ g}$ ( $0.40text{ oz}$ )
Self-Discharge Rate	$< 1%$ per year at $20^circtext{C}$
Operating Temperature	$-55^circtext{C to }+75^circtext{C}$
Terminal Construction	Standard Pressure Contact (Flat Top) / Axial Pins optional
Safety Certifications	UL Component Recognized (MH13654), RoHS Compliant

Operating Guidelines and Safety Best Practices

SAFETY WARNING: Primary lithium cell; DO NOT RECHARGE, short-circuit, crush, incinerate, or expose to temperatures above $+100^circtext{C}$ .

Polarity Verification: Verify positive (+) and negative (-) terminal alignment prior to inserting into battery holders or PCB clip sockets.

Storage Conditions: Store unused cells in a cool, dry place ( $< 20^circtext{C}$ ) in original packaging to maximize shelf life.

To review official international safety standards for primary lithium batteries and testing guidelines, consult the official UL 1642 Standard for Lithium Batteries Directory.

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