Meitu M6 Compatible Battery MB1503 3.85V 2800mAh

Meitu M6 / M6s Series — 3.85V Li-Polymer Replacement Battery (MB1503)

The MB1503 is a 3.85V, 2800mAh Li-Polymer cell that fits the Meitu M6, M6s, MP1512, and MP1503 smartphones. These devices lose usable capacity as their original cell degrades through repeated charge cycles — this battery restores full charge capacity. At 92.10 × 55.60 × 3.40 mm, it matches the original cell footprint exactly.

• M6 / M6s / MP1512 / MP1503 compatibility: All four models share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell fits the entire platform without modification.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the M6 platform. The BMS accepted the cell, thermal regulation stayed within normal range, and the charge IC completed a full cycle without interruption.
• Fuel gauge recalibration after install: On first use, disable fast charging and run one complete discharge-to-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging begins on an uncalibrated cell.

Sudden shutdown at 20–30% on the Meitu M6 after a cell swap

This happens because the fuel gauge IC is still reading the old cell's voltage curve. The new cell hits a voltage cliff under modem or display load at a point the gauge hasn't mapped yet. The phone interprets the voltage drop as a fault and shuts down — even though the cell has remaining capacity. One full discharge-charge cycle at standard rate lets the coulomb counter recalibrate, and the shutdowns stop.

Meitu M6 reporting incorrect battery percentage after replacement

The M6's fuel gauge IC stores a charge model calibrated to the original cell's internal resistance and capacity curve. A new cell has different impedance characteristics, so the stored model produces inaccurate percentage readings from the first charge. The fix is straightforward: drain the battery until the phone powers off, then charge uninterrupted to 100% without removing the cable early. After one full cycle, the coulomb counter resets its baseline to 3.85V nominal and percentage accuracy stabilises.