Energizer 357/303 Batteries provide reliable, long lasting power to your important devices. Count on these button cell batteries to power your electronics, whether you need batteries for your kitchen scale, calculator or your keyless entry system. These Energizer batteries also provide dependable power for medical devices, like your glucose monitor or heart rate monitor. Each 357/303 battery holds power for up to 5 years in storage, letting you keep a ready supply of replacement batteries. Plus, these batteries contain no mercury, making them a more environmentally conscious choice. Count on Energizer specialty batteries to provide long lasting power when you need it most.
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I made the mistake of purchasing a less expensive replacement from a competitor. The competitor's "fresh" batteries would last about a minute in the device. Then I thought there was something wrong with the device, so I put the original, almost dead, Energizer batteries back into the device and it worked for several minutes. The competitor’s fresh batteries could not sustain enough voltage under load. I learned that some less expensive equivalents are not the same as these Energizers. Generally, you should use the brand that is supplied by the manufacturer. These Energizer batteries ROCK!