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JVC BN-VF808 Replacement Battery 7.4V 750mAh Li-ion

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From $30.99 USD $38.99
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Fits JVC GR-D796, GR-D750, GZ-HD40AC camcorders; replaces BN-VF808 and BN-VF808U battery packs.
7.4V and 750mAh capacity delivers runtime across MiniDV and hard-drive JVC camcorders from the mid-2000s lineup.
Connector slides straight into the battery door slot with a vertical orientation; locking tab secures flush against the camcorder body.
We bench-tested this cell on a GR-D796 body charge; BMS accepted the pack on first insertion with no fault cycle needed.
On first use, run one full charge cycle through the camera body before extended recording—JVC bodies map battery percentage to discharge curve on initial charge acceptance.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

7.4V

Amp

750mAh

JVC GR-D796 / GZ-HD40 Series — 7.4V Li-ion Replacement Battery (BN-VF808)

This is a 7.4V, 750mAh Li-ion replacement cell for the JVC BN-VF808 and BN-VF808U battery. It fits the GR-D796, GR-D750, GZ-HD40, GZ-HD40AC, and over 230 additional JVC MiniDV and HD camcorder models. Voltage and capacity match the original spec exactly.

  • GR-D796 and GZ-HD40 series fit: These camcorders share the same 7.4V two-cell Li-ion voltage rail, the same physical latch connector, and the same BMS handshake protocol — which is why one battery covers both MiniDV and early HD bodies in this JVC lineup.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a GZ-HD40 body. The BMS accepted the cell without error, voltage held steady across the discharge curve, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
  • First-use charge cycle on camcorder body: Insert the battery and charge it fully through the camcorder body or JVC OEM charger before your first recording session. Some JVC BMS firmware needs one complete in-body charge cycle to calibrate the battery-remaining indicator accurately on screen.

Why the GR-D796 shows a dead battery indicator on a partially charged replacement cell

JVC's battery gauge maps remaining charge to a voltage-threshold table stored in the camcorder firmware. A new third-party cell has a slightly different discharge curve than the original, so the firmware reads the voltage and maps it to the wrong percentage tier. This usually presents as the indicator jumping from full to one bar without any middle steps. One full charge-discharge cycle from within the camera body re-anchors the threshold mapping and the indicator stabilises.

Camcorder cuts power abruptly during HD recording even with a charged battery

HD recording on the GZ-HD40 series pulls significantly more current than standard MiniDV playback — sensor readout, codec processing, and the optical image stabiliser all draw simultaneously. At peak load, if the BMS protection circuit sees a momentary voltage sag below its cutoff threshold, it shuts the cell down as a precaution. This is more common when the cell is cold or has been sitting discharged for weeks. Warm the camcorder to room temperature, charge the battery to full (4.2V per cell, 8.4V total), and the BMS cutoff will have adequate headroom to sustain the HD recording load.

Compatible Models

GR-D796 GR-D750 GZ-HD40AC GZ-HD40 GZ-HD7 GR-D750U GR-D740AC GZ-HD10 GZ-HD3 GR-D750AC GZ-HD30AC GZ-HD30 GZ-MG255AC GZ-MS90 GZ-MS120 GZ-MG645 GZ-MG630A GZ-MG630AEK GZ-HD300 GZ-HD300AEK GZ-MG630S EX-Z2000 GZ-MG157 GZ-MG157US GZ-MG130 GZ-MG130U GZ-MG130US GZ-MG135 GZ-MG135US GZMG135US GZ-MG155 GZ-MG155U GZ-MG155US GZMG155US GZ-MG175 GZ-MG175US GZ-MG230 GZ-MG230U GZ-MG255 GZ-MG255US GZ-MG275 GZ-MG275US GZ-MG360 GZ-MG555 GZ-MG555US GZ-MG575 GZ-MG575US GZ-MG361 GZ-MG361US GZMG361US GZ-MG330 GZ-MG330US GZ-MG335 GZ-MG335US GZ-MG365 GZ-MG365US GZ-MG465 GZ-MG465US GZ-MG630 GZ-MG670 GZ-MG680 GZ-MG730 GR-D720US GR-D720EK GR-D720EX GR-D725US GR-D725EK GR-D725EX GR-D726US GR-D726EK GR-D726EX GR-D728US GR-D728EK GR-D728EX GR-D740US GR-D740EK GR-D740EX GR-D745US GR-D745EK GR-D745EX GR-D746US GR-D746EK GR-D746EX GR-D750US GR-D750EK GR-D750EX GR-D760US GR-D760EK GR-D760EX GR-D770US GR-D770EK GR-D770EX GR-D770 GR-D770E GR-D770VS GR-D771US GR-D771EK GR-D771EX GR-D771 GR-D775US GR-D775EK GR-D775EX GR-D775 GR-D790US GR-D790EK GR-D790EX GR-D790 GR-D796US GR-D796EK GR-D796EX GR-D850US GR-D850EK GR-D850EX GR-D850 GR-D870US GR-D870EK GR-D875US GR-D875EK GR-D875 GR-DA30US GZ-MG130EK GZ-MG130EX GZ-MG131US GZ-MG131EK GZ-MG131EX GZ-MG131 GZ-MG132US GZ-MG132EK GZ-MG132EX GZ-MG132 GZ-MG133US GZ-MG133EK GZ-MG133EX GZ-MG133 GZ-MG134US GZ-MG134EK GZ-MG134EX GZ-MG134 GZ-MG135EK GZ-MG135EX GZ-MG148US GZ-MG148EK GZ-MG148EX GZ-MG148 GZ-MG150US GZ-MG150EK GZ-MG150EX GZ-MG150 GZ-MG155EK GZ-MG155EX GZ-MG157EK GZ-MG157EX GZ-MG175EK GZ-MG175EX GZ-MG177US GZ-MG177EK GZ-MG177EX GZ-MG177 GZ-MG255EK GZ-MG255EX GZ-MG275EK GZ-MG275EX GZ-MG275E GZ-MG330A GZ-MG330H GZ-MG330R GZ-MG330HUS GZ-MG330RUS GZ-MG330AUS GZ-MG335H GZ-MG335W GZ-MG335HUS GZ-MG335WUS GZ-MG340B GZ-MG340BUS GZ-MG360B GZ-MG360BUS GZ-MG365B GZ-MG365BUS GZ-MG430H GZ-MG430HUS GZ-MG435H GZ-MG435HUS GZ-MG465B GZ-MG465BUS GZ-MG555EK GZ-MG555EX GZ-MG575EK GZ-MG575EX GZ-MG630R GZ-MG630US GZ-MG670B GZ-MG670US GZ-MG680B GZ-MG680US GZ-MG730US GZ-MS100 GZ-MS100US GZ-MS100RUS GZ-MS100R GZ-MS120A GZ-MS120R GZ-MS120B GZ-MS130 GZ-MS130A GZ-MS130R GZ-MS130B GZ-HD3US GZ-HD3EK GZ-HD3EX GZ-HD5US GZ-HD5EK GZ-HD5EX GZ-HD6US GZ-HD6EK GZ-HD6EX GZ-HD7US GZ-HD7EK GZ-HD7EX GZ-HD10US GZ-HD10EK GZ-HD10EX GZ-HD30US GZ-HD30EK GZ-HD30EX GZ-HD40US GZ-HD40EK GZ-HD40EX GZ-HD300B GZ-HD300R GZ-HD300A GZ-HM200 GZ-HD200B GZ-HD200R GZ-HD200A GZ-HM400

Replaces Part Numbers

BN-VF808 BN-VF808U

Technical Specifications

Voltage7.4V
Amp Hours750mAh
Capacity750mAh
Rate5.55Wh
Gross Weight100g /3.53 oz
Approximate Weight100g /3.53 oz

Product Highlights

  • Brand: JVC
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My JVC GR-D796 shows "no battery" or doesn't recognise the new BN-VF808 replacement — what's happening?

JVC camcorders from this era perform a BMS handshake when a battery is inserted. If the cell hasn't completed a charge cycle yet, the handshake can fail and the body rejects it outright. Insert the battery, connect the OEM charger or charge via the camcorder's DC input, and let it run a full charge to 8.4V. One complete charge cycle is usually enough for the body to accept the cell.

The battery percentage on my GZ-HD40 jumps erratically — it shows full, then drops to one bar almost immediately. Is the cell faulty?

The cell itself is not necessarily at fault. JVC's remaining-charge display reads voltage thresholds and maps them to bar segments. A replacement cell's discharge curve doesn't always align perfectly with the firmware's stored voltage table on the first use. Run one full charge-discharge cycle through the camcorder body and the indicator will re-calibrate — after that, the bar progression should track the actual charge level smoothly.

The BN-VF808 replacement drains noticeably faster when I'm shooting in cold weather — is this a defect?

Cold temperatures reduce the ion mobility inside Li-ion cells, which directly lowers available capacity and raises internal resistance. At temperatures below 10°C, a 750mAh cell can deliver noticeably less usable charge before the BMS voltage cutoff triggers. Store the battery in an inside pocket to keep it near body temperature before shooting, and swap it into the camcorder just before recording. Capacity returns to normal once the cell warms back to room temperature.

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