M-Life ML0262 Compatible Battery 3.7V 1050mAh Li-ion

M-Life ML0608 — 3.7V Li-ion Replacement Battery (ML0262)

This is a 3.7V, 1050mAh Li-ion replacement battery for the M-Life ML0608 smartphone. It carries OEM part number ML0262 and slots directly into the ML0608. Capacity is 3.89Wh — matching the original cell specification.

• ML0608 fit: The ML0608 uses a single-cell Li-ion pack at 3.7V nominal. This replacement matches the voltage rail, connector pinout, and physical envelope — 53.00 × 33.90 × 5.60mm — so the BMS handshake runs without modification.
• Bench tested on actual hardware: We cycled this cell through charge and load on the bench. The BMS held cutoff at the correct thresholds — no false full-charge trips, no premature low-voltage cutoff under screen and modem load.
• First-cycle fuel gauge recalibration: After fitting this cell, disable fast charging and run one full discharge-to-charge cycle at standard rate. The fuel gauge IC on the ML0608 calibrates its coulomb counter against the new cell's discharge curve on that first pass — skipping this step leads to erratic percentage readings until calibration catches up.

Why the ML0608 reports wrong battery percentage after a cell swap

The fuel gauge IC on the ML0608 builds its state-of-charge model from the discharge curve of the previous cell. When a new cell goes in, that stored curve no longer matches the actual cell chemistry. The IC keeps reading against old calibration data, so the percentage shown can run ahead of or behind the real charge state. One complete discharge below 10% followed by a full charge at standard rate forces the coulomb counter to resync. After that cycle, percentage tracking should stabilise within a few percent of actual.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage-cliff failure, not a capacity issue. Under heavy load — modem transmitting, screen at full brightness — the cell voltage sags faster than the fuel gauge predicts. When cell voltage drops below the BMS cutoff threshold (typically 3.0V under load), the phone shuts off even though the displayed percentage still reads high. The fix is to let the fuel gauge IC complete one full calibration cycle first, as described above. If shutdowns continue after calibration, check that the replacement cell contacts are seated flush — a loose connection increases resistance and worsens voltage sag under load.