Meizu 16T BA928 Replacement Battery 3.85V 4400mAh

MeiZu 16T / M928Q / M1928 — 3.85V Li-Polymer Replacement Battery (BA928)

The BA928 is a 3.85V, 4400mAh Li-Polymer cell for the MeiZu 16T, M928Q, and M1928 smartphones. It replaces the original battery when capacity has dropped or the cell no longer holds charge. Dimensions are 76.90 × 67.40 × 4.66mm — verify your bay clearance before fitting.

• 16T, M928Q, and M1928 compatibility: These three models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. One cell SKU covers all three without modification.
• Bench tested on actual hardware: We ran the BA928 through charge and discharge cycles on the 16T. The BMS accepted the cell without error codes, and the protection circuit tripped correctly at the low-voltage threshold — no runaway events observed.
• Fuel gauge recalibration on first use: After fitting, disable fast charging and run one full discharge-to-charge cycle before enabling it again. The fuel gauge IC in the 16T calibrates its coulomb counter against the new cell's discharge curve on that first cycle — skipping this step causes percentage errors and early-shutdown faults.

Sudden shutdown at 20–30% on the MeiZu 16T after a cell swap

The 16T's Exynos SoC draws a sharp current spike when the modem transmits or the display peaks at full brightness. A new, uncalibrated cell can dip below the BMS cutoff voltage under that load even when the OS still reports 20–30% remaining. The fuel gauge IC is still referencing the old cell's discharge curve, so it reads the state of charge incorrectly. Run one full uninterrupted discharge cycle — letting the phone reach 1–2% before plugging in — and the coulomb counter resets to the actual cell capacity.

USB fast charge not activating on first cycle after replacement

MeiZu's proprietary fast-charge handshake checks impedance on the new cell before allowing high-current delivery. On a fresh BA928, cell impedance reads slightly higher than the threshold — the charge IC defaults to 5V standard charging as a safety fallback. This is normal and clears after the first full charge cycle as the cell conditions. If fast charge still does not activate after two full cycles, check the cable — the protocol requires a certified MeiZu or USB-PD 3.0 cable, not a generic 5V cable.