Battery everActive LR66 (AG4) — pack of 10 alkaline button cells, 1.5V

everActive LR66 (AG4) alkaline button cells come in a pack of 10 and provide a stable 1.5V output for a variety of small electronic devices. These compact coin-shaped batteries have standardized dimensions for straightforward replacement and are designed for low-drain and intermittent-use applications. The pack format ensures a ready supply for multiple devices or spare storage with a long shelf life.

Advantages

These alkaline button cells deliver a consistent 1.5V voltage suitable for watches, calculators and small toys. The standardized size simplifies replacement and compatibility across many devices that accept LR66/AG4 cells. A pack of 10 offers convenience and value for households or service technicians who need several replacements at once. The chemistry provides dependable performance in low-drain applications and supports intermittent operation without rapid self-discharge.

Suitable for

• Wristwatches and clocks
• Calculators and small handheld electronics
• Children’s toys and novelty devices
• Remote controls and key fobs
• Medical instruments with low power requirements (e.g., thermometers, small monitors)

Key specifications

• Cell type: alkaline button cell
• Nominal voltage: 1.5 V
• Form factor: coin/button cell, standardized LR66/AG4 dimensions
• Pack quantity: 10 cells
• Intended use: low-drain and intermittent-use devices
• Storage: long shelf life under proper storage conditions

How to use

Identify the device’s battery compartment and confirm compatibility with LR66/AG4 size and 1.5V rating before replacing cells. Remove the depleted cell carefully, observing polarity markings, and insert a new cell with correct orientation. Ensure the compartment cover is securely closed. Store unused cells in a cool, dry place and avoid mixing old and new batteries or different chemistries within the same device.

Usage recommendations

For reliable operation, replace all cells in multi-cell devices at the same time, and follow the device manufacturer’s guidance on safe battery handling and disposal. Keep batteries out of reach of children and avoid short-circuiting or exposing cells to fire or excessive heat.