The reserve battery for the Ascom models i63 and d63 is an essential accessory for the reliable use of your devices. Weighing 63 grams, this Li-Ion battery provides a powerful and long-lasting energy source specifically designed to meet the requirements of the respective devices. The device-specific battery size ensures an optimal fit and functionality. The battery is classified as a device battery and meets the necessary safety standards, including UN number 3481, indicating safe handling. This item is sold as a single unit and is subject to declaration, meaning it complies with applicable battery regulations. The reserve battery is a practical solution to extend the operational time of your devices and ensure that you are reachable at all times. It is ideal for use in professional environments where constant communication is required.