Galilio Redmi 9 & Note 9 (BN54) Li-ion Polymer Replacement Battery The Galilio BN54 replacement battery is built with premium lithium-polymer cells to restore strong, long-lasting power to your phone. With up to 5020mAh typical capacity (4920mAh rated), it delivers extended usage for calls, browsing, gaming, and streaming. The stable 3.87V output with a 4.45V charge limit ensures safe and efficient charging performance. Precision-designed for perfect fit and dependable reliability, it’s an ideal replacement for worn or damaged batteries. Specifications Brand: Galilio Model: BN54 Compatible Devices: Xiaomi Redmi Note 9, Xiaomi Redmi 9, Xiaomi Redmi 10X 4G Battery Type: Lithium-ion Polymer (Li-Polymer) Rated Capacity: 4920mAh Typical Capacity: 5020mAh Nominal Voltage: 3.87V Charging Limit Voltage: 4.45V