Duracell LR44 (76A) Alkaline Button — 1.5V Power for Thermometers, Calculators, Toys, and Watches

The Duracell LR44 (also known as 76A, A76, or AG13) is a widely used 1.5-volt alkaline button battery that powers compact electronics needing steady output in a tiny footprint. From digital thermometers and laser pointers to calculators, watches, and small toys, LR44 is a common replacement that keeps everyday gadgets ready. When your device lists “LR44,” “A76,” “76A,” or “AG13,” this cell provides the fit, voltage, and reliability the manufacturer intended.

Why LR44?

• Stable 1.5V output: Supports precise sensing and clear displays.
• Compact form: Ideal for slim housings and miniature compartments.
• Leak-resistant design: Added protection for delicate circuits.
• Widely available: Easy to source and replace across brands.

Common Applications

• Digital thermometers and medical instruments (as specified)
• Laser pointers and small LED gadgets
• Calculators, watches, and toys
• Small game controllers and novelty devices

Technical Details

• Chemistry: Alkaline
• Voltage: 1.5V
• Designations: LR44 / A76 / 76A / AG13
• Typical dimensions: ~11.6 mm diameter × ~5.4 mm height
• Type: Primary (non-rechargeable)

LR44 vs. 357/303 Silver Oxide and SR44

LR44 is alkaline; 357/303 or SR44 cells use silver-oxide chemistry with similar size but different discharge characteristics and often longer life under low drain. Use the chemistry your device recommends. If it specifically calls for silver oxide, choose 357/SR44. If it lists LR44/A76/AG13, alkaline is the intended option.

Installation Best Practices

1. Verify the code: Check the manual or the old cell for LR44/A76/AG13/76A.
2. Observe polarity: Match the “+” cap to the diagram inside the holder.
3. Clean contacts: Remove residue with a dry, lint-free cloth.
4. Seat securely: Ensure the cell clips firmly under the contact tabs.
5. Test: Power the device and confirm stable display or output.

Storage, Handling, and Safety

• Store sealed at room temperature away from moisture.
• Do not mix loose cells with metal objects.
• Keep away from children and pets; button cells can be hazardous if swallowed.
• Remove batteries from devices stored for long periods.

Tips for Longer Life

• Turn devices off after use.
• Avoid unnecessary backlighting or sound effects where settings allow.
• Use the chemistry recommended by the manufacturer for optimal performance.

Troubleshooting

• Dim display: Replace with a fresh cell; confirm correct seating and contact pressure.
• Intermittent power: Clean contacts and re-seat; check for worn contact springs.
• Short runtime: High-drain toys or continuous backlight will reduce life; follow power-saving tips.

FAQs

Can I use SR44/357 instead of LR44?

Only if your device permits it. Silver-oxide cells may offer flatter discharge curves but are a different chemistry; always follow the device recommendation.

Are LR44 and AG13 the same?

AG13 is a common cross-reference for LR44/A76/76A. Check your manual for approved equivalents.

Is LR44 rechargeable?

No. Use only primary LR44 cells unless the device is designed for a specific rechargeable alternative.

Summary

Duracell’s LR44 (76A) delivers compact, dependable 1.5V power for a wide range of small electronics. Match the code, install correctly, and store spares properly to keep everyday gadgets working smoothly.