Realme GT Neo6 SE Replacement Battery BLPA45 7.82V 2650mAh

Realme GT Neo6 SE — 7.82V Li-Polymer Replacement Battery (BLPA45)

The BLPA45 is a 7.82V, 2650mAh Li-Polymer cell built to replace the original battery in the Realme GT Neo6 SE. It fits the GT Neo6 SE directly, matching the OEM voltage, connector, and BMS communication profile. Capacity is rated at 20.72Wh.

• GT Neo6 SE fit: The GT Neo6 SE uses a dual-cell Li-Polymer stack running a 7.82V nominal rail. The BLPA45 matches that stack voltage and the proprietary BMS handshake the charge IC expects — a mismatched nominal voltage causes the charge IC to reject the cell entirely.
• Bench tested on actual hardware: We cycled this cell through the GT Neo6 SE charge IC and confirmed BMS authentication passed on the first connection. The coulomb counter accepted the new cell after one full discharge-charge cycle without throwing a battery health error in the OS.
• Fuel gauge recalibration after installation: On first use, disable fast charging and run one complete discharge down to automatic shutdown, then charge to 100% on standard charge. This gives the fuel gauge IC one clean reference cycle against the new cell's actual discharge curve before high-current charging begins.

Why the GT Neo6 SE reports wrong battery percentage after a cell swap

The GT Neo6 SE uses a coulomb counter that builds its percentage model from the previous cell's discharge curve. When a new cell goes in, the counter is still referencing the old curve — which means the displayed percentage drifts from reality, often reading high then snapping down. The OS will not automatically reset this model on power-up. One full discharge-to-shutdown cycle followed by a complete charge forces the coulomb counter to rebuild its reference map against the new cell.

Sudden shutdown at 20–30% on the replacement cell

This happens when the fuel gauge IC hasn't recalibrated and the phone's percentage reading no longer matches the cell's actual remaining voltage. Under a high-draw event — modem burst, screen-on wake, or a GPU spike — the cell voltage drops below the BMS cutoff threshold even though the OS shows charge remaining. The BMS sees the voltage cliff and cuts output immediately. Run one full unconstrained discharge cycle to let the gauge IC relearn where the real cutoff voltage sits, which on this cell is approximately 3.0V per cell under load.