Battery Energizer EN390/389P1 1.5V Alkaline

Energizer EN390/389P1 1.5V Alkaline is a compact coin/button cell battery engineered for steady, long-lasting power in small electronic devices. Designed to deliver consistent voltage over extended periods, this 1.5V alkaline cell fits common watch, calculator, and small instrument applications where reliable low-drain energy is required. The slim, low-profile form factor makes installation straightforward and compatible with many consumer and professional devices that accept this size of alkaline button cell.

Advantages

This alkaline battery provides stable voltage output and dependable shelf life, helping devices maintain accurate timekeeping and consistent operation. Its low self-discharge rate supports long storage before use, and the single-cell design simplifies replacement. The cell is manufactured to meet typical safety and performance expectations for consumer alkaline button cells, offering predictable performance across a range of temperatures and low-drain applications.

Suitable for

• Wristwatches and small timepieces
• Calculators and basic handheld electronics
• Key fobs, remote controls, and small sensors
• Medical devices with low power draw (verify device requirements)

Key specifications

• Nominal voltage: 1.5 V
• Chemistry: Alkaline
• Cell format: button/coin style, low-profile
• Intended use: low-drain portable electronics
• Storage: low self-discharge for extended shelf life

How to use

Locate the battery compartment of the device and note polarity indicators. Remove the depleted cell following the device manufacturer’s instructions, taking care to avoid shorting the terminals. Install the new 1.5V alkaline cell with the correct orientation, ensuring it seats securely in the compartment. After replacement, confirm the device powers on and functions correctly. Dispose of the used battery according to local regulations for household batteries.

Usage recommendations

Store unused batteries in a cool, dry place away from direct sunlight and metal objects. Do not attempt to recharge, disassemble, or heat the cell. For devices with critical performance requirements, verify compatibility and expected service life in the device manual before use.