About this replacement
JVC GR-DVL40 / GR-DVL33 Series — 7.4V Li-ion Replacement Battery (BN-V214UB)
This is a 7.4V, 2200mAh (16.28Wh) lithium-ion battery that replaces the OEM BN-V214UB and BN-V214U cells. It fits the JVC GR-DVL40, GR-DVL33, GR-DVL25, GR-DVF31, and over a dozen additional GR-series compact camcorders. The contact layout and BMS communication protocol match the original JVC battery bay on these models.
- GR-DVL and GR-DVF series compatibility: These models share the same 7.4V two-cell Li-ion architecture and identical battery bay connector. The BMS handshake uses the same data line, so a single cell works across the full platform without modification.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on a GR-DVL40 body. The BMS accepted the cell on the first charge cycle and reported remaining capacity without flagging an incompatible or unknown battery alert.
- Camcorder BMS initialisation tip: On first install, run one full charge through the camcorder body or OEM JVC charger before recording. Some GR-series bodies require this cycle to calibrate the battery-remaining display accurately against a new cell's discharge curve.
Battery percentage indicator jumping on the GR-DVL40 after fitting a new cell
JVC's battery gauge maps voltage thresholds to percentage steps that were tuned to the original BN-V214UB discharge curve. A new lithium cell has a slightly flatter mid-range discharge profile, so the body may show an abrupt drop from three bars to one without a gradual transition. This is not a cell fault — it is the body misreading the voltage at a threshold point. Running two full charge-discharge cycles through the OEM charger resets the calibration reference and stabilises the display.
GR-DVL40 showing a dead battery icon on a cell that still has charge
If the camcorder shuts down and displays the low-battery warning but the cell reads above 7.0V on a multimeter, the body's cutoff threshold is triggering on a voltage sag rather than actual depletion. This happens when the cell has not completed a full initialisation cycle and the BMS is reading resting voltage instead of load voltage correctly. Place the battery in the OEM charger until the charge indicator shows full, then reinsert. If the body then powers on normally, the issue was calibration, not cell capacity.