The Energizer 357/303 is a 1.55V silver oxide button cell for watches, calculators, glucose monitors, and other low-drain electronics. Silver oxide chemistry holds a flat voltage curve through most of the cell's useful life, so devices that depend on a stable supply (digital readouts, timekeeping circuits) keep working accurately right up to end of life - unlike alkaline button cells which sag in voltage as they discharge.

• Chemistry: Silver Oxide (Zn/Ag2O)
• Voltage: 1.55V nominal
• Capacity: 150 mAh
• Dimensions: 11.6mm diameter x 5.4mm height
• Zero mercury formula
• 5-year shelf life

Replaces: SR44, SR44W, SR44H, 303, AG13, LR44, A76, EPX76, MS76, 228, 280-62, SB-B9, and other 357/303-equivalent batteries.

Common uses: watches, calculators, heart rate monitors, keyless entry systems, glucose monitors, cameras, laser pointers, and hearing aids.

Tip: Install with the positive (+) flat side facing up unless your device documentation says otherwise, and handle the cell by its edges - skin oils on the terminal can shorten shelf life. Store unused cells in their original card at room temperature, away from coins or keys that could short the terminals.