Redni BN5W Replacement Battery 3.91V 5000mAh Li-Polymer

Redni Note 14 Pro / 24116RACCG — 3.91V Li-Polymer Replacement Battery (BN5W)

This is a 5000mAh (19.55Wh) 3.91V lithium-polymer cell that replaces the factory BN5W battery in the Redmi Note 14 Pro and the 24116RACCG variant. It fits devices where the original cell has degraded through repeated charge cycles and no longer sustains voltage under normal load. Dimensions are 84.20 × 62.90 × 5.60mm — match these against your existing cell before ordering.

• Note 14 Pro / 24116RACCG fit: Both models share the BN5W cell platform — same connector pinout, same BMS handshake protocol, and the same voltage rails feeding the PMIC. One replacement covers both variants.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the bench. The BMS accepted the charge IC handshake without error codes, held steady voltage through simulated screen-on and modem loads, and triggered cutoff cleanly at the low-voltage threshold.
• Fuel gauge recalibration on first use: After fitting, disable fast charging and run one full discharge down to automatic shutdown, then charge to 100% on standard current. This gives the coulomb counter a clean reference curve before the system attempts high-current fast charging against an uncalibrated cell.

Why the Note 14 Pro reports wrong battery percentage after a cell swap

The fuel gauge IC on these Redmi devices builds a discharge curve by tracking charge flow in and out over time. When you swap the physical cell, the IC is still referencing the old cell's internal resistance profile. The new cell will have a different impedance, so the percentage readout drifts — you may see jumps or an early shutdown indicator that does not reflect true capacity. One complete discharge-charge cycle at standard current rewrites the coulomb counter reference and the percentage display stabilises.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem, display, or both draw a current spike that pulls the cell voltage below the BMS protection threshold — roughly 3.0V under load — even though the reported percentage suggests charge remains. A freshly installed cell with an uncalibrated fuel gauge will show an inaccurate state-of-charge, making the remaining capacity look higher than it is. Run the recalibration cycle first: one full discharge to auto-off, then a full charge to 100% at standard wattage. After that cycle, the PMIC gets accurate voltage data and the shutdowns stop.