OnePlus X BLP607 Replacement Battery 3.8V 2400mAh

OnePlus X E1000 / E1005 — 3.8V Li-Polymer Replacement Battery (BLP607)

This is a 3.8V, 2400mAh (9.12Wh) Li-Polymer cell built to replace the original BLP607 battery in the OnePlus X. It fits the E1000, E1005, and X Dual SIM variants. When the original cell degrades and can no longer hold voltage under load, this replacement restores full device operation.

• E1000 and E1005 platform fit: Both variants share the same battery bay dimensions and connector pinout. The BLP607 footprint — 79.80 × 61.94 × 3.27mm — is specific to this chassis. A mismatched cell will not seat flat against the midframe, which stresses the connector and the display assembly above it.
• Bench tested on actual hardware: We ran this cell through charge-discharge cycles on the OnePlus X board. The BMS accepted the cell without fault flags, and the charge IC held the correct 4.35V cutoff throughout. No thermal excursions were recorded during the constant-current phase.
• First-cycle fast charge protocol: On first use after installation, disable fast charging for one complete discharge-charge cycle. The fuel gauge IC on the OnePlus X calibrates its coulomb counter against the new cell's discharge curve. Running Dash Charge into an uncalibrated cell pushes current before the IC has mapped the correct reference points.

Why the OnePlus X reports wrong battery percentage after a cell swap

The OnePlus X uses a fuel gauge IC that builds its capacity model from the original cell's charge and discharge history. When you install a fresh BLP607, that learned model no longer matches the new cell's actual voltage curve. The IC references stale data, so the percentage readout drifts — it may show 40% and then drop to 10% within minutes. One full discharge to auto-shutoff followed by a complete charge to 100% lets the coulomb counter reset against the new cell and restores accurate reporting.

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

This is a voltage cliff failure, not a capacity problem. Under peak modem load or a screen-on burst, the cell's terminal voltage drops faster than the fuel gauge expects, triggering a low-voltage protection cutoff before the percentage reaches zero. It happens most often in the first few cycles on a new cell before the fuel gauge IC has recalibrated. Run two complete discharge-charge cycles without fast charging, then confirm the shutdown threshold shifts. If the phone still cuts out above 15%, check that the cell connector is fully seated — a partial connection increases contact resistance and amplifies voltage sag under load.