OnePlus Nord N100 BLP813 Replacement Battery 3.85V 4700mAh

OnePlus Nord N100 — 3.85V Li-Polymer Replacement Battery (BLP813)

The BLP813 is a 3.85V, 4700mAh Li-Polymer cell that fits the OnePlus Nord N100 (BE2015, BE2013, BE2011). It replaces the original battery when capacity has dropped to the point where the phone can no longer hold charge through a normal day. Swap it when the original cell is swollen, stuck below 20% by noon, or refusing to charge past a low threshold.

• Nord N100 BE-series fit: The BE2015, BE2013, and BE2011 are regional variants of the same hardware platform. They share the same battery bay dimensions, connector pinout, and BMS handshake protocol, so one BLP813 cell covers all three without modification.
• Bench tested on actual hardware: We ran this cell on a BE2013 unit. The BMS accepted the new cell without a boot-loop or charge rejection. The charge IC cycled through trickle, CC, and CV phases cleanly, and the phone reached full charge without thermal events or unexpected cutoff.
• Fuel gauge recalibration on first cycle: On first use after installation, disable fast charging and run one full discharge-to-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated coulomb counter — preventing erratic percentage readings from the start.

Sudden shutdown at 20–30% on the Nord N100 after a cell swap

This happens because the fuel gauge IC is still reading the old cell's voltage-to-capacity curve. The new cell hits a voltage cliff under modem or screen load before the reported percentage catches up. The phone sees voltage drop below the shutdown threshold while the display still shows 25%. One complete discharge-charge cycle at standard rate forces the coulomb counter to re-anchor to the new cell's actual curve, and the early shutdowns stop.

USB fast charge not activating after battery replacement

On the first charge cycle after a cell swap, the Nord N100's charge IC may not negotiate the proprietary fast-charge protocol if the new cell's impedance reads outside the expected window. This is a protection response, not a fault. Plug in with the stock cable and charger, let the first full cycle complete at standard rate, then disconnect and reconnect — the charge IC re-evaluates cell impedance at the start of each session and will unlock fast charge once it confirms the cell is within range. Check that the fast-charge icon appears at 5V/2A or above on the second cycle.