Duracell N (MN9100/LR1) Specialty Alkaline — Compact 1.5V Battery for Legacy and Specialty Devices

The Duracell N (MN9100/LR1) Specialty Alkaline battery is a small, 1.5-volt cylindrical cell designed for compact electronics that require dependable power in a tight footprint. Common in glucose meters, GPS trackers, small flashlights, keyless entry devices, and legacy gadgets, the N cell provides steady voltage, reliable starts, and a robust shelf life. If your device calls for “N,” “LR1,” or “MN9100,” this battery offers a trusted, modern replacement for continued performance.

Why the N Cell?

• Compact size: Fits housings too small for AAA batteries.
• Stable 1.5V output: Keeps indicators, transmitters, and sensors operating predictably.
• Leak-resistant design: Helps protect delicate contact springs and circuit boards.
• Good shelf life: Store spares for quick swaps without worry.

Typical Uses

• Small flashlights and penlights
• Glucose meters and medical devices (as specified)
• Keyless entry and access remotes
• Miniature radios, pagers, and niche electronics
• GPS trackers and compact sensors

Technical Details

• Chemistry: Alkaline
• Voltage: 1.5V
• Designations: N / MN9100 / LR1 / E90
• Typical dimensions: ~30.2 mm length × ~12 mm diameter
• Type: Primary (non-rechargeable)

N vs. AAA vs. Button Cells

N cells are shorter than AAA and deliver higher capacity than most single button cells of similar diameter. They are not interchangeable with AAA, LR44, or coin cells. Always match the exact designation printed on the old battery or in the device manual.

Installation and Best Practices

1. Verify the code: Look for “N,” “MN9100,” or “LR1.”
2. Polarity matters: Insert the positive nub toward the “+” marking.
3. Clean contacts: Remove oxidation with a dry, lint-free cloth.
4. Close securely: Firm contact pressure prevents intermittent power.
5. Test immediately: Activate the device to confirm stable operation.

Storage and Safety

• Store at room temperature; avoid high heat and moisture.
• Remove batteries from devices stored long-term.
• Keep out of reach of children; recycle or dispose responsibly.

Extending Runtime

• Use power-saving modes where possible.
• Turn devices off between uses.
• Keep terminals clean to reduce resistance and energy loss.

Troubleshooting

• Flickering light or display: Reseat the cell and clean contacts.
• Short life: Continuous transmission or high-brightness modes consume energy faster.
• No power: Confirm you’re using an N cell and that polarity is correct.

FAQs

Is the N battery rechargeable?

No—use only primary alkaline N cells unless the device specifically supports a rechargeable alternative.

How does N compare to AA/AAA?

N is smaller and intended for compact housings; capacity is lower than AA/AAA, but sufficient for the intended devices.

Can I substitute multiple button cells for an N battery?

Not recommended; voltage and fit will differ, and you may damage the device.

Summary

Duracell’s N (MN9100/LR1) Specialty Alkaline is a straightforward, dependable 1.5V solution for compact and legacy electronics. Install the correct size, maintain clean contacts, and store spares properly for reliable performance.