Varta 391 Electronic Silver Oxide Button Cell Battery in Pill Box
As a silver oxide electronic button cell battery, the Varta 391 is a small yet mighty replacement battery for the most popular devices. Silver oxide batteries are renowned for their low self-discharge, stable output voltage, and the ability to deal with high current demands, and the Varta 391 is no exception to the rule. Like all button batteries, the Varta 391 is perfect for replacing batteries in calculators, heart-rate monitors, watches, glucometers, small electronic toys, digital thermometers, and keyless remote entry systems for cars and homes. Not to mention, that the Varta 391 is mercury-free and has the ability to operate in extreme heat and extreme cold.