Button Cell Battery Energizer 357/303 Silver Oxide 1.55V

The Energizer Button Cell Battery 357/303 Silver Oxide 1.55V is a compact primary cell engineered for stable voltage delivery in small electronic devices. Based on silver-oxide chemistry, it offers a predictable discharge curve and long shelf life compared with alkaline coin cells, making it suitable as a direct replacement where 357 or 303 designations are specified. The battery is intended for applications that require consistent performance and minimal voltage drop over time.

Advantages

Silver-oxide construction provides a steady 1.55V output and reliable end-of-life characteristics, reducing the risk of unexpected device failure. The cell's stable voltage under varying loads supports accurate timekeeping and consistent function in precision instruments. Its compact, thin form factor allows use in a wide range of devices designed for button cells. The chemistry also contributes to extended shelf life when stored at recommended conditions.

Suitable for

• Wristwatches and pocket watches
• Calculators and small electronic instruments
• Medical devices such as glucose meters and hearing aids (where specified)
• Key fobs, car remotes and security devices

Key specifications

• Nominal voltage: 1.55 V
• Cell type: Silver-oxide button cell
• Physical form: Coin/button cell, thin cylindrical profile
• Typical applications: Timepieces, portable electronics, small precision devices
• Performance characteristics: Stable voltage under moderate loads, predictable discharge curve
• Storage: Long shelf life when stored in a cool, dry place

How to use

Install the battery in the device following the manufacturer's polarity markings; the positive side is usually marked on the cell and faces outward in most compartments. Ensure the contact surfaces in the device are clean and free of corrosion before insertion. After replacing the battery, verify device operation and reset any functions that require initialization. Dispose of used batteries according to local regulations for battery recycling and hazardous waste.

Usage recommendations

Store unused batteries in original packaging at room temperature and avoid exposure to high humidity or heat. Do not mix with batteries of different chemistries or charge primary (non-rechargeable) cells. For devices requiring precise voltage stability—such as watches and medical instruments—replace batteries as soon as signs of low power appear to maintain accurate operation.