Original battery Xiaomi BN54 for Redmi Note 9, REDMI 9 Internal.
Battery Chemical: Li-Polymer
Input Voltage: 4,45 V
Output Voltage: 3,87 V
Capacity: 5020 mAh
Compatible with Xiaomi Redmi Note 9, Redmi 9 (M2004J19G, M2004J19C), Redmi 10X, Redmi Note 10X PRO 5G