The Xiaomi Mi 11i BM4Y Replacement Battery is a 4520mAh M2012K11G 3.87V battery specifically designed for the Xiaomi Mi 11i model. Made of metal, this battery is a perfect fit for those in need of a reliable and compatible replacement. With a single port and originating from China, this UK stock battery ensures a smooth and efficient power supply for your mobile phone. Ideal for those looking to extend their phone's battery life or replace a damaged one, this Xiaomi battery is a high-quality choice for your Xiaomi Mi 11i device.