About this replacement
JVC GR-DV5000 Series — 7.4V Li-ion Replacement Battery (BN-V408)
This is a 7.4V, 1100mAh Li-ion replacement for the JVC BN-V408 battery pack. It fits the GR-DV5000, GR-D200U, GR-D91US, GR-DVF505U, and over 280 additional JVC miniDV camcorder models. The cell is rated at 8.14Wh and matches the original pack's voltage, connector, and form factor exactly.
- GR-DV5000 and GR-D200U series compatibility: These models share the same BN-V408 footprint and 7.4V nominal rail. The battery connector, latch geometry, and BMS communication protocol are identical across this camcorder family, so one pack covers the full range.
- Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a GR-DV5000 body. The BMS accepted the cell without error flags, and the camera's battery-remaining indicator tracked through the discharge curve as expected.
- First charge on JVC miniDV bodies: Charge this pack inside the camera body or JVC OEM charger on the first cycle. Some JVC BMS firmware requires an in-body charge cycle to calibrate the battery-remaining display to the new cell's discharge curve.
Why the GR-DV5000 battery indicator drops suddenly near the end of a charge
JVC's battery gauge on the GR-DV5000 uses a voltage-threshold map calibrated to the original BN-V408 discharge curve. A replacement cell with a slightly different internal resistance will hit the lower voltage threshold faster in the final 20% of capacity, causing the indicator to jump from two bars to zero without warning. This is a gauge mismatch, not a defective pack. Running one full charge and discharge cycle inside the camera body lets the BMS resample the cell's actual curve and tighten up the indicator accuracy.
Camera displaying "no battery" or refusing to power on with a new pack installed
JVC's BMS runs a brief authentication handshake when a battery is inserted cold. If the cell voltage is below roughly 6.8V — common on packs that have been in storage — the camera body may reject it outright rather than attempt a charge. Remove the pack, place it in a JVC-compatible external charger for 15–20 minutes to bring it above that threshold, then reinsert it into the camera. The body should recognise it and resume normal charging from there.