The ENERGIZER A23 MN21 Batteries are 12V security alarm batteries with a long expiry date, making them ideal for use in long-lasting applications such as door bells. These cylindrical batteries have a diameter of 10mm and a height of 28mm, with a nominal voltage of 12V and a capacity of 50mAh. Manufactured by Energizer, these alkaline batteries are non-rechargeable and suitable for low drain devices. With a chemical formula of MnO2 and an operating temperature range of -18°C to +55°C, these batteries offer reliable power for your security needs.
