Micro Batteries Murata Micro Batteries offer a 1.5V to 3V nominal voltage range, a 20mAh to 1000mAh capacity rating, and ISO 9001/14001 certification. These coin cell batteries provide high performance and reliability, utilizing state-of-the-art design and production technologies. Murata Micro Batteries are ideal for automotive, Internet of Things (IoT), and medical applications.