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JVC BN-VG138 GZ-HD620 Camcorder Replacement Battery 3.7V 4450mAh

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From $46.99 USD $57.99
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Fits JVC GZ-HD620, GZ-HM330, GZ-MS210 and replaces OEM part BN-VG138, BN-VG138EU, BN-VG138US.
Voltage is 3.7V at 4450mAh capacity, delivering 16.47Wh for sustained HD video recording and playback on this compact camcorder.
Connector seats vertically into the battery door slot with a single locking tab; orientation is fixed and cannot be reversed.
We bench tested full charge cycles in a standalone JVC charger; BMS responded normally with no fault codes or cutoff anomalies.
On first use in the GZ-HD620, complete one full charge cycle inside the camera body before extended recording sessions to allow the firmware to map capacity display correctly.
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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.

Delivery and Shipping

🔹 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.

Disclaimer

⚠️ 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

3.7V

Amp

4450mAh

JVC GZ-HD620 Series — 3.7V Li-ion Replacement Battery (BN-VG138)

This 3.7V, 4450mAh Li-ion battery replaces the OEM BN-VG138 cell in JVC HD camcorders. It fits the GZ-HD620, GZ-HD620BAH, GZ-HM330, GZ-MS210, and over 170 additional GZ-series models. Same voltage rail, same connector, same BMS communication protocol as the original.

  • GZ-series platform fit: JVC's GZ-series camcorders share a common battery bay, connector pinout, and BMS handshake across the HD and MS sub-lines. That shared architecture means one cell covers a wide model range without any hardware modification.
  • Bench tested on actual hardware: We ran this cell in a GZ-HD620 body through charge, discharge, and BMS communication cycles. The protection circuit responded correctly to charge termination and over-discharge cutoff without triggering false low-battery warnings mid-recording.
  • First-use charge cycle on GZ-series bodies: Run the first full charge inside the GZ-series camera body or JVC OEM charger — not a third-party charger. The body's BMS maps voltage thresholds to the battery-remaining display during that initial cycle. Skipping it causes the indicator to read inaccurately for the life of the cell.

Why the GZ-HD620 shows a dead battery icon on a freshly charged replacement cell

The GZ-HD620 uses a voltage-curve mapping system to estimate remaining charge. A new third-party cell has a slightly different discharge curve than the original JVC cell the firmware was calibrated against. On first install, the camera reads an unfamiliar voltage profile and defaults to a low or empty indicator as a safety fallback. One full charge cycle completed inside the camera body resets that mapping. After that cycle, the indicator tracks accurately.

Battery percentage jumping erratically during GZ-series recording

Erratic percentage jumps during active recording come from the BMS recalibrating against a discharge curve it hasn't fully learned yet. Video recording, continuous autofocus, and image stabilisation create variable current draw — the BMS samples voltage under load and compares it to its stored curve. Until the curve is calibrated, those load spikes cause sudden percentage drops and recoveries. Run two full discharge-to-recharge cycles in the camera body to stabilise the readings; the display should settle at or above 3.5V per cell before the camera cuts out.

Compatible Models

GZ-HD620 GZ-HD620BAH GZ-HM330 GZ-MS210 GZ-MG680 GZ-HD500 GZ-HM335 GZ-HM550 GZ-MG750 GZ-MS215 GZ-MS250 GZ-MS230 GZ-MS110 GZ-HM300BUS GZ-HM300U GZ-HM320 GZ-HM320BUS GZ-HM320U GZ-HM550BUS GZ-HM550U GZ-HD500BUS GZ-HD500U GZ-HD620BUS GZ-HD620U GZ-MS110BUC GZ-MS110BUS GZ-MS110U GZ-MS210BUC GZ-MS210U GZ-MS230AUC GZ-MS230AUS GZ-MS230BUC GZ-MS230BUS GZ-MS230RUC GZ-MS230RUS GZ-MS230U GZ-MS250BUC GZ-MS250BUS GZ-MS250U GZ-MG750AUC GZ-MG750BUC GZ-MG750BUS GZ-MG750RUC GZ-MG750U GZ-MG760 GZ-E10 GZ-E100 GZ-E200 GZ-E205 GZ-E220 GZ-E300 GZ-E306 GZ-E505 GZ-EX210 GZ-EX215 GZ-EX250 GZ-EX250BUS GZ-EX310 GZ-EX355 GZ-EX515 GZ-EX555 GZ-GX1 GZ-HD510 GZ-HD520 GZHD520 GZ-HD550 GZ-HD750 GZ-HD760 GZ-HM30 GZ-HM30U GZ-HM35 GZ-HM35U GZ-HM300 GZ-HM310 GZ-HM334 GZ-HM340 GZ-HM350 GZ-HM40 GZ-HM430 GZ-HM435 GZ-HM440 GZ-HM445 GZ-HM446 GZ-HM450 GZ-HM50 GZ-HM50U GZ-HM570 GZ-HM65 GZ-HM650 GZ-HM655 GZ-HM690 GZ-HM860 GZ-HM870 GZ-HM880 GZ-HM890 GZ-HM960 GZ-HM980 GZ-HM990 GZ-MS118 GZ-MS150 GZ-MS216 GZ-MS240 GZ-EX265 GZ-EX275 GZ-EX575 GZ-G3 GZ-GX8 GZ-E245 GZ-E565 GZ-HM970 GZ-HM855 GZ-HM670 GZ-HM845 GZ-HM334BEU GZ-HM335BEU GZ-MS240AUS GZ-HD500BU GZ-HD500SEK GZ-HD500SEU GZ-HD620-B GZ-HD620BEU GZ-HD620BU GZ-HD620-R GZ-HD620-S GZ-HM300BU GZ-HM300SEK GZ-HM300SEU GZ-HM330BEK GZ-HM330BEU GZ-HM330SEU GZ-HM550BEK GZ-HM550BEU GZ-HM550BU GZ-MG750AU GZ-MG750BEK GZ-MG750BEU GZ-MG750BU GZ-MG750RU GZ-MG980 GZ-MG980-A GZ-MG980-R GZ-MG980-S GZ-MS110BEK GZ-MS110BEU GZ-MS110BU GZ-MS210AEK GZ-MS210AEU GZ-MS210BEU GZ-MS210SEK GZ-MS210SEU GZ-MS215BEU GZ-MS215PEU GZ-MS215SEU GZ-MS216AEU GZ-MS216BEU GZ-MS216REU GZ-MS216SEU GZ-MS230AU GZ-MS230BEU GZ-MS230BU GZ-MS230RU GZ-MS250BEK GZ-MS250BEU GZ-MS250BU GZ-E300AU GZ-E300BU GZ-E300WU GZ-E505BU GZ-EX310AU GZ-EX310BU GZ-EX310WU GZ-EX555BU GZ-GX1BU GZ-EX210BU GZ-E200AU GZ-E200BU GZ-E200RU GZ-HM650BU

Replaces Part Numbers

BN-VG138 BN-VG138EU BN-VG138US

Technical Specifications

Voltage3.7V
Amp Hours4450mAh
Capacity4450mAh
Rate16.47Wh
Net Weight102g /3.60 oz
Gross Weight172g /6.07 oz
Approximate Weight172g /6.07 oz
Dimension 42.56 x 30.48 x 46.21mm

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 GZ-HD620 says "no battery" or flashes an error the moment I insert the new cell — is the battery faulty?

It isn't faulty. The GZ-HD620's BMS runs an authentication check on insertion and compares the cell's voltage signature to an expected range. A new replacement cell sitting at a partial factory charge can fall outside that window on first read. Insert the battery and charge fully via the OEM JVC charger or the camera body before powering on for the first time. That single charge cycle clears the error on the vast majority of installs.

The battery percentage on my GZ-HM330 drops from 80% to 20% instantly during recording — what's happening?

The GZ-HM330 maps percentage to specific voltage thresholds calibrated against the original cell's discharge curve. A replacement cell discharges along a slightly different curve, so the firmware misreads the voltage drop under recording load as a sudden capacity cliff. This isn't cell failure — it's a calibration gap. Run two full charge-discharge cycles in the camera body and the percentage display will track correctly. After calibration, expect the camera to shut down near 3.5V rather than jumping to zero mid-clip.

My new BN-VG138 drains noticeably faster in cold weather compared to indoor shoots — is something wrong with the cell?

Nothing is wrong. Li-ion cells lose usable capacity when the electrolyte cools — internal resistance rises and the BMS hits its low-voltage cutoff sooner than it would at room temperature. This effect is more pronounced in compact camcorder cells like the BN-VG138 because the small form factor limits thermal mass. Keep the spare battery in an inner jacket pocket between shots to hold it near body temperature, and the available capacity will stay close to the 4450mAh rated figure.

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