BBK VIVO I530 Compatible Battery 3.7V 1000mAh Li-ion

BBK VIVO I530 / I589 / K118 / K119 — 3.7V Li-ion Replacement Battery

This is a 3.7V 1000mAh Li-ion cell for the BBK VIVO I530, I589, K118, K119, and compatible models. It fits compact early-era VIVO smartphones that share the same battery bay dimensions: 53.00 × 33.90 × 5.70mm. Voltage and capacity match the original specification exactly.

• Cross-model fit — I530, I589, K118, K119: These VIVO models share the same battery footprint, connector pinout, and 3.7V charge rail. The BMS handshake requirements are identical across the group, so one cell covers all four without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a VIVO platform. The BMS accepted the cell on first insertion, balanced to full charge without cutoff errors, and held voltage above 3.5V through the majority of the discharge curve.
• Fuel gauge recalibration on first use: On first installation, run one complete discharge to auto-off, then charge uninterrupted to 100%. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before the OS uses that data to report percentage.

Why the VIVO I530 reports wrong battery percentage after a cell swap

The fuel gauge IC on these VIVO devices stores a learned discharge curve from the original cell. When a new cell goes in, the IC still references that old curve, so the percentage readout drifts — often reading 100% earlier than true full, or dropping fast in the final 20%. One full uninterrupted discharge-charge cycle forces the IC to re-anchor its coulomb counter to the new cell's actual charge acceptance. After that cycle, percentage accuracy returns to normal. No app or reset menu is required — the recalibration is automatic once the full cycle completes.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem or display draws a short current spike and the cell voltage drops below the BMS cutoff threshold — even though the percentage readout still shows charge remaining. On a fresh cell, this is almost always a fuel gauge calibration issue, not a faulty battery. The IC cuts power at what it thinks is the voltage floor, but it's reading a curve that belongs to the old, degraded cell. Run one full discharge cycle to auto-off followed by a full charge, and the shutdown point will shift back toward 0%.