Xiaomi Fimi Palm Replacement Battery GH3DC01FM 7.4V 800mAh

Xiaomi Fimi Palm — 7.4V Li-Polymer Replacement Battery (GH3DC01FM)

This is a 7.4V 800mAh Li-Polymer replacement battery for the Xiaomi Fimi Palm handheld gimbal camera. It matches OEM part number GH3DC01FM and fits directly into the Fimi Palm battery compartment. Capacity is 800mAh (5.92Wh) — identical to the factory specification.

• Fimi Palm platform fit: The Fimi Palm uses a slim Li-Polymer cell in a proprietary form factor — 74.50 x 20.80 x 11.50mm — with a BMS handshake that monitors cell voltage and temperature. This replacement matches those dimensions and communicates correctly with the camera's power management circuit.
• Bench tested on actual hardware: We cycled this cell through the Fimi Palm's charge and discharge sequence. The BMS accepted the cell without fault codes, voltage held stable through the gimbal motor and sensor draw, and the protection circuit triggered correctly at the low-voltage cutoff threshold.
• First-cycle initialisation on the Fimi Palm: Run one full charge cycle through the Fimi Palm body itself before shooting. The camera's BMS maps battery-remaining percentages against the cell's discharge curve during this first cycle — skipping it causes the indicator to read inaccurately from the start.

Why the Fimi Palm battery indicator reads incorrectly after a cell swap

The Fimi Palm tracks remaining capacity by mapping voltage thresholds against a stored discharge curve. A new cell has a slightly different internal resistance profile than a worn factory cell, so the camera's voltage readings land at different points on that curve. This causes the indicator to jump — showing 80% one moment and 40% the next. One full charge-discharge cycle inside the camera recalibrates the threshold mapping and stabilises the readout.

Fimi Palm showing a dead-battery icon immediately after inserting a charged replacement

This happens when the cell's resting voltage sits just below the camera's wake threshold after shipping — typically under 3.5V per cell in a discharged storage state. The BMS interprets this as a depleted or fault cell and refuses to boot. Connect the Fimi Palm to its charger for 10–15 minutes before powering on; once the cell voltage climbs above the wake threshold (approximately 3.6V per cell, 7.2V combined), the camera will recognise the battery and start normally.