DJI Osmo Pocket Replacement Battery HB3 7.7V 800mAh

DJI Osmo Pocket Series — 7.7V Li-Polymer Replacement Battery (HB3)

This is a 7.7V, 800mAh Li-Polymer replacement battery for the DJI Osmo Pocket, Osmo Pocket II, and Osmo Pocket 2. It replaces OEM part number HB3 and powers both the camera system and the three-axis gimbal stabilization. Capacity is 6.16Wh — identical to the original cell specification.

• Osmo Pocket and Pocket 2 compatibility: Both generations share the HB3 cell format, the same 7.7V nominal rail, and the same BMS handshake protocol. The connector pinout and physical dimensions are unchanged across the lineup, so one cell fits all three variants listed.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an Osmo Pocket body. The BMS accepted the cell without error flags, gimbal calibration completed normally, and voltage held stable through full 4K recording load.
• First-use charge cycle on Osmo Pocket: Charge the replacement cell fully inside the Osmo Pocket body or via the original DJI charging cable before your first shoot. The Osmo Pocket BMS maps its battery-remaining display against a full charge baseline — skipping this step can cause the indicator to read inaccurately from the start.

Why gimbal draw matters on an 800mAh cell

The Osmo Pocket runs a camera sensor, image processor, and a three-axis motorized gimbal from a single small cell. The gimbal motors pull additional current every time the device corrects for movement, which is continuous during handheld use. That combined draw is significantly higher than a static camera of the same sensor size. A cell with any internal resistance above spec will show voltage sag under that load, which the BMS interprets as a low-battery condition even when capacity remains.

Battery percentage jumping or dropping suddenly mid-recording

This usually means the Osmo Pocket's fuel gauge hasn't mapped the new cell's discharge curve yet. The BMS uses voltage thresholds calibrated to the original cell's curve — a new replacement cell can read differently until it has completed at least one full charge-to-depletion cycle. Run the battery down to auto-shutdown once, then charge fully inside the device. After that cycle, percentage readout should track accurately and stabilize above 3.85V per cell under load.