Upgrade the power source of your Xiaomi M2 or M2S with this high-quality 2000 mAh BM20 battery. This internal battery is specially designed to fit your device perfectly, ensuring a seamless replacement process. Its compatibility with Xiaomi devices makes it a reliable option for your mobile phone needs. With its impressive capacity, this battery can keep your device running for hours on end. Its advanced technology ensures a long-lasting lifespan, making it a practical investment for your mobile phone. Upgrade your device's performance with this top-of-the-line battery.