Insta360 One X4 Replacement Battery 3.85V 2350mAh Li-ion

Insta360 One X4 — 3.85V Li-ion Replacement Battery (CINSBBMA)

This 3.85V 2350mAh (9.05Wh) Li-ion cell replaces the OEM CINSBBMA battery in the Insta360 One X4 360-degree action camera. It fits the One X4 body directly and is sized to the original 63.40 × 43.30 × 15.50mm form factor. Voltage and capacity match the stock cell specification.

• One X4 platform fit: The One X4 runs a BMS that checks cell voltage on insertion. This replacement matches the 3.85V nominal rail the camera expects, so the handshake completes without throwing a rejection error on boot.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the One X4 body. The BMS logged charge termination at the correct cutoff voltage and reported cell status without flagging a fault.
• First charge cycle on the One X4: Run the first full charge through the camera body using the OEM cable, not a third-party dock. Some One X4 units need one in-body charge cycle before the battery-remaining display calibrates accurately to a new cell's discharge curve.

Why the One X4 shows a dead battery indicator on a replacement cell that isn't empty

The One X4 maps its battery percentage to a voltage-threshold table built around the OEM cell's discharge curve. A new third-party cell can sit at 3.70V and read as critically low because the camera expects a different curve shape at that voltage point. This is a calibration mismatch, not a faulty cell. One full charge-discharge cycle inside the camera body re-maps the indicator to the actual discharge profile of the new cell. After that cycle, the percentage display tracks correctly.

Battery percentage jumping erratically during 360 video recording

Sustained 360 recording stacks sensor readout, gyroscope stabilisation, and dual-lens stitching processing all at once — that combined draw pulls voltage down faster than the indicator samples it, so the display skips steps rather than stepping down smoothly. This is not cell failure; it is the indicator losing pace with a high and variable load. If the jumps occur only during active recording and the cell recovers to a stable reading when the camera is idle, the cell is functioning correctly. Confirm the cell rests above 3.60V at idle after a recording session to rule out an actual low-capacity fault.