Oppo Realme GT NEO5 Compatible Battery BLP985 7.4V 2400mAh

Oppo Realme GT NEO5 — 7.4V Li-Polymer Replacement Battery (BLP985)

This is a 7.4V, 2400mAh Li-Polymer replacement battery carrying OEM part number BLP985. It fits the Realme GT NEO5 smartphone. Capacity figure is taken from product data: 2400mAh / 17.76Wh.

• Realme GT NEO5 fit: The GT NEO5 uses a dual-cell Li-Polymer pack on a 7.4V nominal rail. The BLP985 matches that cell configuration, connector pinout, and the BMS communication protocol the Realme charge IC expects on startup.
• Bench tested on actual hardware: We cycled this cell through a full charge and discharge on the GT NEO5 board. The BMS handshook correctly on first contact, charge IC accepted the pack without fault codes, and voltage held stable through a full screen-on discharge sweep.
• Fuel gauge recalibration on first use: On first installation, disable SUPERVOOC or any fast-charge mode and run one complete discharge-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes amperage into an uncalibrated pack.

Sudden shutdown at 20–30% on the GT NEO5 after a cell swap

The Realme GT NEO5 runs a 5G modem and a high-refresh display simultaneously. Under that combined load, a new cell with an uncalibrated fuel gauge will hit a voltage cliff before the OS percentage reaches zero. The phone shuts down not because the battery is empty but because cell voltage drops below the BMS protection threshold — typically 3.0V per cell — faster than the gauge predicts. One full discharge-charge cycle at slow rate recalibrates the coulomb counter and aligns the reported percentage with actual cell voltage. After calibration, shutdowns at 20–30% almost always stop.

SUPERVOOC fast charge not activating on the first cycle after replacement

Realme's SUPERVOOC handshake runs a voltage negotiation between the charger, the charge IC on the motherboard, and the BMS inside the battery pack. On a fresh cell, the BMS may reject the high-current request on the first cycle because its internal state registers are at factory defaults rather than learned values. Plug into the original SUPERVOOC adapter and let the phone complete one full standard-rate charge first. After that cycle, the BMS state is updated and the SUPERVOOC negotiation completes normally — confirmed on the bench at the expected charge voltage step-up above 5V.