BLU Vivo 5 Mini Replacement Battery C655339150L 3.8V 1500mAh

BLU Vivo 5 Mini — 3.8V Li-ion Replacement Battery (C655339150L)

This is a 3.8V, 1500mAh Li-ion battery for the BLU Vivo 5 Mini (V050). It replaces OEM part C655339150L and restores power to calling, messaging, and app functions when the original cell has degraded or failed to hold charge. Capacity is 5.7Wh at rated voltage.

• Vivo 5 Mini / V050 fitment: Both model designations run the same 3.8V single-cell architecture with the same connector pinout and BMS handshake. One battery covers both variants without modification.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the Vivo 5 Mini platform. The BMS accepted charge protocol correctly, voltage held steady under screen and modem load, and the protection circuit tripped at the expected low-voltage threshold.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard rate. The fuel gauge IC on this device calibrates its coulomb counter against the new cell's discharge curve — skipping this step causes the percentage readout to drift until recalibration completes naturally.

Why the Vivo 5 Mini reports wrong battery percentage after a cell swap

The fuel gauge IC stores a discharge model built against the original cell's internal resistance and capacity. When a new cell goes in, that stored model no longer matches the actual cell chemistry, so percentage readouts lag or jump. The IC needs at least one full discharge-charge cycle to map the new cell's voltage-to-capacity curve. After that cycle, percentage tracking stabilises and aligns with real remaining capacity.

Sudden shutdown at 20–30% on the replacement cell

This happens when the cell voltage drops below what the modem or display backlight needs under peak load, even though the fuel gauge still shows charge remaining. The voltage cliff is steeper on a new cell before the gauge IC recalibrates — the reported percentage and the actual deliverable voltage briefly diverge. Run the phone through one full discharge to near-zero, then charge to 100% without interruption. After that cycle, the coulomb counter resets its baseline and shutdowns at false-high percentages stop.