Xiaomi BN54 Original-Capacity Replacement Battery (5000mAh)

The BN54 is a high-density, massive-capacity internal Lithium-ion Polymer replacement battery engineered by Xiaomi for its heavily popular Redmi entry-level and budget performance lineups. If your smartphone is showing severe signs of aging—such as draining rapidly during gaming, shutting down at 15–20% capacity, or swelling and lifting your back panel—a premium BN54 cell will fully restore your phone’s multi-day standby lifecycle.

• Battery Model: BN54

• Battery Type: Lithium-ion Polymer (Li-Po)

• True Capacity: 5000 mAh (Typical) / 4920 mAh (Rated)

• Standard Voltage: 3.85V

• Charging Voltage Limit: 4.4V

• Safety Integration: Built with an upgraded, high-quality Protection Circuit Module (PCM) using a dual-IC design. This layout dynamically shields the phone against high-voltage surges, controls heat buildup during active charging, and cuts off input once the battery reaches 100%.

• Device Compatibility: This 5000mAh structural footprint and connector setup precisely fit:

  • Xiaomi Redmi 9

  • Xiaomi Redmi 9 Prime

  • Xiaomi Redmi Note 9 (Global / 4G Edition)

  • Xiaomi Poco M2 / Poco M2 Reloaded