5000mAh Xiaomi battery for replacing the factory one in Xiaomi Poco M4 Pro/Redmi Note 11/11S. If your phone's battery lasts very little, suddenly drains after a call, has swollen, or no longer charges, it's time to replace it. Modern smartphones do not make this process easy, as they can only be opened with special tools. It is recommended to consult a specialized technician, as any mistakes may lead to malfunction of your device.