GP alkaline cell battery 186 is designed to power your small gadgets, most commonly used in watches, thermometers, calculators, key fobs, garage door openers, electronic toys, and more. High energy density from GP alkaline batteries supplies miniature devices with more consistent voltage output and power that lasts. Engineered to offer complete protection against leakage with secure sealing technology, protecting you and your devices. These batteries are developed to withstand the test of time and are guaranteed with a 3-year shelf life. Our alkaline button cell is mercury-free, reducing its impact on the environment.