Duracell High Power Lithium CR2 Battery (3V)

A compact, high-current 3V primary lithium battery for cameras, laser rangefinders, security sensors, and other electronics that require quick bursts of power in a small form factor. Choose CR2 when your device specifically calls for it and you need dependable performance in varying indoor/outdoor conditions.

When to Choose This Battery

• Use if: Your camera, rangefinder, motion sensor, or smart-home device specifies “CR2.”
• Avoid if: Your device calls for CR123A, 1/2 AA (ER14250/3.6V), AA, or any rechargeable size—these are not interchangeable.
• Consider rechargeables only if your device manual explicitly allows a rechargeable CR2 (often labeled 15270) and lists a compatible voltage and charger.

Typical Applications

• 35 mm and digital cameras, autofocus systems, and compact flashes
• Golf and hunting laser rangefinders
• Security motion and glass-break sensors; door/window sensors
• Select medical and industrial instruments (per device manufacturer)

Runtime Expectations

Actual life depends on pulse demand, temperature, and device settings. As a rough guide:

• Motion sensor: about 6–18 months with moderate triggering and wireless transmissions.
• Laser rangefinder: several hundred to a few thousand activations per season with intermittent use.
• Camera: hundreds of shots without heavy flash usage; less with frequent flash firing.

To extend runtime, reduce unnecessary alerts/transmissions, enable sleep modes, and keep contacts clean.

Compatibility and Identifiers

• Standard name: CR2
• Also seen as: DLCR2 (Duracell naming), CR2 Lithium
• Not the same as: CR123A, 1/2 AA (ER14250/3.6V), 2CR5, or AA

Technical Specs

CR2 vs. CR123A vs. AA

• CR2 vs. CR123A: CR2 is shorter and narrower; they are not interchangeable in either direction.
• CR2 vs. AA: Different size and voltage; AA devices will not accept CR2.
• Always match the exact size and chemistry listed in your device manual.

Installation Checklist

1. Confirm the battery size printed on the device or in the manual is “CR2.”
2. Align polarity: match “+” and “–” to the compartment diagram.
3. Clean contacts with a dry, lint-free cloth before insertion.
4. Close battery doors/caps fully to prevent intermittent power.
5. Test device operation (e.g., sensor trigger, camera autofocus/flash) after installation.

Storage and Safety

• Store in original packaging in a cool, dry place; avoid heat and direct sun.
• Do not recharge, crush, or incinerate. Do not mix old and new batteries.
• Avoid carrying loose cells with keys/coins to prevent short circuits.
• Keep out of reach of children and pets. Recycle or dispose of used cells per local guidelines.

Troubleshooting

• No power: Recheck polarity and seating; confirm the device requires CR2 (not CR123A).
• Intermittent operation: Clean contacts and ensure the battery door is latched.
• Short runtime: High pulse loads, frequent wireless transmissions, or cold temperatures can reduce life; adjust device settings or keep a spare.

FAQ