Oppo BLP587 R8200 Replacement Battery 3.8V 2400mAh

Oppo R8200 Series — 3.8V Li-Polymer Replacement Battery (BLP587)

This is a 3.8V, 2400mAh lithium-polymer cell for the Oppo R8200, R8205, R8207, and R1C smartphones. It replaces part number BLP587 when the original cell can no longer hold adequate charge through a normal day. Dimensions are 78.25 × 60.75 × 3.40mm — verify these against your existing cell before fitting.

• R8200, R8205, R8207, R1C compatibility: These four models share the same battery bay geometry, connector pinout, and BMS handshake protocol. Swapping between them uses the same BLP587 cell without any modification.
• Bench tested on actual hardware: We cycled this cell on an R8200 unit and confirmed the BMS accepted charge current, balanced at full capacity, and reported state-of-charge correctly after two full cycles.
• First-cycle fast-charge hold-off: On first use after installation, disable fast charging for one complete discharge-charge cycle. The fuel gauge IC needs to map the new cell's discharge curve before high-current charging runs against an uncalibrated coulomb counter.

Why the R8200 reports wrong battery percentage after a cell swap

The fuel gauge IC on the R8200 stores a learned discharge curve from the old cell. When you install a new cell, that stored curve no longer matches the actual voltage-to-capacity relationship of the fresh lithium-polymer cell. The result is percentage readings that jump, stall, or cap out well below 100%. One full discharge to around 3.0V followed by a complete charge to 4.35V forces the IC to recalibrate against the new curve.

Sudden shutdown at 20–30% remaining on the new cell

This happens when the modem, display backlight, or a background process pulls a brief high-current spike the cell cannot sustain at that state of charge. Voltage drops sharply below the BMS cutoff threshold — around 3.0V per cell — and the phone shuts off even though the fuel gauge still shows charge remaining. It is most common in the first few cycles before the fuel gauge IC has mapped the cell's actual voltage cliff. Run two full discharge-charge cycles and the shutoffs typically stop.