BP-6M-S Mobiado Lucido Replacement Battery 3.7V 700mAh

Mobiado Lucido / Luminoso / Stealth — 3.7V Li-ion Replacement Battery (BP-6M-S)

This is a 3.7V, 700mAh Li-ion cell matching the BP-6M-S specification. It fits the Mobiado Lucido, Luminoso, and Stealth smartphones. Voltage, connector pinout, and physical dimensions (40.20 × 40.90 × 6.50mm) match the original cell exactly.

• Lucido, Luminoso, and Stealth compatibility: All three models share the same battery bay dimensions and the same BP-6M-S connector layout. The BMS handshake uses the same NTC thermistor line, so the charge IC recognises the replacement cell without firmware complaints.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on a BP-6M-S compatible platform. The BMS held charge termination at 4.2V and engaged protection cutoff correctly at the low-voltage threshold. No thermal anomalies during the CC/CV transition.
• Fuel gauge recalibration on first use: After fitting, run one complete discharge down to auto-shutdown, then charge uninterrupted to 100% before using the device normally. This lets the coulomb counter establish a fresh baseline against the new cell's actual discharge curve, preventing erratic percentage readings early on.

Sudden shutdown at 20–30% on the replacement cell

A new cell has a slightly different voltage-versus-capacity curve than the worn original. The phone's fuel gauge IC still references the old curve, so it predicts 20–30% remaining at a point where the new cell's voltage actually drops steeply under modem or screen load. The processor sees voltage dip below its minimum rail requirement and shuts down before the gauge reaches zero. One full calibration cycle — discharge to cutoff, full uninterrupted charge — rewrites the fuel gauge reference and eliminates these early shutdowns.

Phone not powering on after the battery sat in storage

Li-ion cells self-discharge in storage. If the voltage drops below approximately 2.5V per cell, the BMS enters lockout mode and blocks normal charge current to protect against unsafe charging of a deeply discharged cell. The phone will appear completely dead — no boot, no charge indicator. Connect the phone to a wall charger rather than a PC USB port, which supplies only 500mA; a wall adapter delivers enough current for the charge IC to push a small trickle charge past the BMS lockout threshold. Leave it connected for 15–20 minutes before attempting to power on.