CR-V3 Batteries (3.0 V Lithium): How to Choose and Use

CR-V3 batteries are primary lithium (Li-MnO2) packs roughly the size of two AA cells side-by-side. They deliver a stable 3.0 V and high energy for cameras, flashes, instruments, and sensors that need long runtime from a compact form factor.

Quick specs

Is CR-V3 right for your device?

• Use when your device or manual explicitly lists “CR-V3” or “CRV3.” Many older digital cameras and flashes accept one CR-V3 or two AA cells.
• Avoid if your device requires different formats (CR123A, 2CR5, 18650, etc.). The shape and polarity are unique.
• Do not substitute AA alkaline for CR-V3 unless the device supports two AA cells in place of one CR-V3. Always check the battery door label or manual.

Choosing within the CR-V3 category

1) Standard lithium CR-V3 (3.0 V, non-rechargeable)

• Best for: cameras, flashes, meters, and safety/medical devices that must work first time after storage.
• Pros: highest energy per cell, long shelf life, wide temperature tolerance.
• Considerations: single-use; recycle after depletion.

2) High-performance lithium CR-V3

• Best for: cold-weather field work or heat-exposed equipment.
• Pros: slightly higher capacity and/or broader temperature ratings (some down to −40°C).
• Considerations: typically costs more; benefits are most noticeable in harsh environments.

3) Rechargeable RCR-V3 (lithium-ion)

• Voltage: typically 3.6–3.7 V nominal (up to 4.2 V when fully charged). Some versions are regulated to 3.0 V—verify before purchase.
• Best for: frequent, non-critical use where the device explicitly permits RCR-V3.
• Pros: reusable, lower total cost over time.
• Considerations: lower effective capacity than primary cells; requires a compatible charger; unregulated 3.7 V types can damage 3.0 V-only devices.

Common uses

• Digital cameras and flashes (long shoots without frequent changes)
• Portable instruments and meters (e.g., air-quality, light, or surveying tools)
• Medical and safety devices specified for CR-V3
• Outdoor sensors and GPS/locators that see temperature swings

Runtime planning: quick math

Energy in a CR-V3 is roughly 9 Wh. Estimate runtime as:

Runtime (hours) ≈ Battery Wh ÷ Device W

Alternatives and compatibility notes

• Two AA lithium (1.5 V each) may replace one CR-V3 in some devices; capacity is similar, but check the battery compartment and manual.
• Do not confuse CR-V3 with CR123A or 2CR5—they are different sizes and voltages.
• If availability is an issue, confirm whether your device also accepts two AA cells; AA lithium cells are widely stocked.

Storage, handling, and safety

• Store cool and dry (around 20°C/68°F); avoid direct sun and high heat.
• Never attempt to recharge a primary (non-rechargeable) CR-V3.
• Keep terminals covered when carrying spares; use plastic cases to prevent short circuits.
• Air travel: carry spare lithium metal cells in carry-on baggage only; protect terminals and follow airline rules.
• Recycle at approved battery collection points; do not dispose in fire or trash.

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