Xiaomi BM4P Original-Capacity Replacement Battery (4500mAh)

The BM4P is a high-capacity internal Lithium-ion Polymer replacement battery engineered by Xiaomi for its high-performance, 120Hz display legacy mid-rangers. Because these compatible models feature power-intensive hardware configurations, a degraded cell will cause severe UI lagging, prompt sudden power drainage under 30%, or loop continuously on the “Poco” or “Redmi” startup screen. Upgrading to a premium BM4P unit restores smooth multi-tasking runtimes and original factory standby life.

• Battery Model: BM4P

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

• True Capacity: 4500 mAh (Typical) / 4400 mAh (Rated)

• Standard Voltage: 3.85V

• Charging Voltage Limit: 4.4V

• Safety Engineering: Outfitted with an integrated Protection Circuit Module (PCM) using a premium dual-IC controller chip. This design safeguards the motherboard against over-voltage spikes, prevents overnight overcharging, and controls internal operating temperatures during active use.

• Device Compatibility: This exact 4500mAh structural profile and flex connecter clip fit precisely into:

  • Xiaomi Poco X2

  • Xiaomi Redmi K30 (4G / 5G / 5G Racing)

  • Xiaomi Redmi K30i 5G