Energizer Silver Oxide 397/396 Battery (SR726SW, 1.55V, 1 Pack)

Small electronic devices often fail at the worst times because their button cell batteries drain without warning. The Energizer Silver Oxide 397/396 battery delivers reliable, long-lasting power for watches, calculators, and other compact electronics. Its stable 1.55V output and low self-discharge keep your device running longer, so you can count on it when you need it most.

Who is it for

This battery is ideal for anyone who uses small electronics daily—watch wearers, students with calculators, or professionals with key fobs and medical devices. It’s also a smart choice for repair shops and hobbyists who need a dependable replacement cell.

Main features

• Silver oxide chemistry for consistent voltage and high energy density
• 1.55V nominal voltage matches most watch and calculator requirements
• Mercury-free design for safer disposal and environmental friendliness
• Up to 5 years shelf life, so you can stock up without worry
• Wide operating temperature range from -10°C to +60°C
• Flat top terminal for secure contact in battery compartments

Specifications

• Battery type: Silver Oxide
• IEC designation: SR726SW / SR726W
• Equivalent models: SR59, V397, D397, SR726, 397, 396, AG2
• Voltage: 1.55V
• Typical capacity: 32 mAh
• Diameter: 7.9 mm
• Height: 2.6 mm
• Rechargeable: No
• Packaging: 1 battery per blister pack

Tips

Always replace both batteries in a device at the same time to ensure balanced performance. Store unused batteries in a cool, dry place away from metal objects to prevent short circuits.