Mobiado Lucido Replacement Battery 3.7V 1100mAh BP-6M-S

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

This is a 3.7V, 1100mAh Li-ion cell built to the BP-6M-S specification. It fits the Mobiado Lucido, Luminoso, and Stealth smartphones. Swap it in when the original cell no longer holds a charge or the phone shuts down unexpectedly during normal use.

• Lucido, Luminoso, and Stealth compatibility: All three models share the same 40.20 × 40.90 × 6.50mm cell footprint, 3.7V nominal voltage rail, and BP-6M-S connector pinout. The BMS handshake protocol is identical across the trio, so one cell revision covers all three variants without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a BP-6M-S compatible test rig, confirmed BMS communication at full charge, and verified the protection circuit trips correctly at the low-voltage cutoff threshold before the cell reaches a damaging depth of discharge.
• First-cycle fuel gauge recalibration: After installation, disable fast charging if available and run one full discharge-to-charge cycle before normal use. This gives the fuel gauge IC time to map its coulomb counter against the new cell's actual discharge curve — skipping this step is the main reason percentage readings jump or stall after a cell swap.

Sudden shutdown at 20–30% on the Mobiado Lucido after a cell swap

This is a voltage cliff failure, not a capacity problem. At 20–30% indicated charge, modem activity or screen load pulls a current spike the new cell cannot sustain without the terminal voltage dropping below the BMS cutoff threshold. The phone interprets this hard cutoff as a dead battery and shuts down, even though the fuel gauge shows charge remaining. The fuel gauge IC is still running the discharge curve from the old, degraded cell — it does not yet know where the new cell's voltage cliff sits. One complete discharge-charge cycle recalibrates the coulomb counter and pushes the reported cutoff point to match the real cell behaviour.

Phone will not power on after the replacement cell sat in storage

Li-ion cells self-discharge during storage, and a BP-6M-S cell stored below roughly 2.5V per cell will trigger BMS lockout — the protection circuit opens and blocks current flow entirely to prevent further damage. Plugging in a charger shows no response because the charge IC never receives power from the locked-out cell. Connect the phone to a wall adapter — not a PC USB port — and leave it for 15 to 30 minutes without pressing the power button. Most charge ICs on this platform run a trickle pre-charge recovery routine that slowly raises cell voltage back above the 2.9V re-initialisation threshold before switching to normal CC/CV charging.