JVC BN-V25 GR-1U Replacement Battery 6V 4200mAh
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JVC BN-V25 GR-1U Replacement Battery 6V 4200mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
JVC BN-V25 GR-1U Replacement Battery 6V 4200mAh - is backordered and will ship as soon as it is back in stock.
Voltage
6V
Amp
4200mAh
JVC GR-1U / GR-323U Series — 6V Ni-MH Replacement Battery (BN-V25)
This is a 6V, 4200mAh nickel-metal hydride replacement battery for JVC camcorders in the GR-1U and GR-323U family, along with over 250 compatible models. It replaces OEM part numbers BN-V25, BN-V25U, BN-V65, BN-V12, BN-V15, BN-V20, BN-V22, and related variants. Physical dimensions are 89.30 × 46.50 × 37.80mm — confirm your original battery matches before fitting.
- Cross-model fit on the BN-V series: JVC used the same 6V Ni-MH cell platform across multiple GR-series MiniDV camcorders from this era. The connector pinout and voltage rail are consistent across the BN-V11U through BN-V24U family, which is why one replacement cell covers such a wide model range.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a JVC GR-series body. The BMS accepted the cell without error flags, and voltage output held steady across the draw curve during both recording and playback modes.
- First-cycle initialisation on Ni-MH bodies: Ni-MH cells in JVC camcorders benefit from being charged fully in the OEM charger or camera body before first use. Some GR-series bodies need one complete in-camera charge cycle to map the new cell's discharge curve to the battery-remaining indicator accurately.
Why the GR-1U battery indicator reads full then drops suddenly mid-recording
Ni-MH cells have a relatively flat discharge curve for most of their capacity range. The GR-series voltage-threshold indicator was calibrated to the original BN-V series cell's specific discharge profile. A new or aged cell may show full bars until voltage drops past a narrow cliff point near the end of the discharge cycle, causing the indicator to jump from showing charge remaining to near-empty with little warning. This is a calibration mismatch between the indicator circuit and the cell — not a fault with the replacement. Running one full charge-discharge cycle in the camera body helps the indicator re-anchor to the new cell's actual curve.
Camera body stays off after fitting a new cell — no startup response
If the GR-1U shows no response after a new Ni-MH cell is fitted, the cell likely shipped at a low state of charge — common with Ni-MH chemistry during storage. The camera's power circuit requires the cell voltage to meet a minimum threshold before the body will initialise. Place the cell in the OEM charger for at least 30 minutes before retrying. If the body still does not start, check that the battery door is fully latched, as the GR-1U has a door-open interlock that cuts power at the connector — the cell must read at least 5.4V at the terminals before the body will respond.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: JVC
- Manufacturer: CS
- Series: Standard
- Color: Dark Grey
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My GR-1U battery meter jumps from half-full to empty almost instantly — is the replacement cell faulty?
The cell is almost certainly fine. JVC's GR-series indicator circuit maps voltage thresholds to charge level, and Ni-MH cells have a flat discharge curve that drops sharply only at the very end. The indicator loses tracking accuracy until the camera body has seen a full charge-discharge cycle on the new cell. Run one complete charge through the OEM charger or camera body, then discharge during normal recording, and the meter will re-anchor to the new cell's actual curve.
The camcorder ran fine for two minutes then shut down — now it won't restart on the same charge.
This points to a voltage sag event. Ni-MH cells can dip below the camera body's minimum operating voltage under sustained recording load — particularly if the cell hasn't completed a full initialisation cycle. The GR-series body cuts power rather than risk unstable operation. Charge the cell fully in the OEM charger until the charge indicator shows complete, then refit. If the shutdown repeats at the same point in a recording session, the cell's internal resistance may be elevated — check terminal voltage under load; it should hold above 5.2V during active recording.
The battery worked for a few months, then the GR-1U started losing charge much faster than it used to — what causes that?
Ni-MH cells degrade faster when repeatedly charged from shallow discharge levels. If the battery was topped up after short sessions rather than run down before recharging, the cell develops voltage depression — a characteristic of Ni-MH chemistry where capacity appears to shrink. Run the cell down fully during a recording session, then charge completely in the OEM charger. One or two full discharge-recharge cycles can partially recover lost capacity. If capacity does not improve after two conditioning cycles, the cell has reached end of life and needs replacement.
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