The Tpower 12V A23 Keyless Entry Alkaline Battery is specifically designed for keyless remotes, calculators. watches and other small electronics. Tpower is known all around the industry for their reliable, durable and quality products. The A23 Keyless Entry Battery provides optimal power for your devices and is a battery that you can count on. For an affordable and high-performing battery, the Tpower A23 is the perfect choice for you.