Panasonic AG3 Replacement Battery 6V 4200mAh Ni-MH
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Panasonic AG3 Replacement Battery 6V 4200mAh Ni-MH - 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.
Panasonic AG3 Replacement Battery 6V 4200mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
Voltage
6V
Amp
4200mAh
Panasonic AG3 / AGEZ Series — 6V Ni-MH 4200mAh Replacement Battery
This is a 6V, 4200mAh Ni-MH replacement battery for Panasonic professional video cameras. It fits the AG3, AGBP15, AGEZ1U, AGEZ20, and over 135 additional Panasonic camcorder models. Use it as a direct swap for an original battery that has lost capacity or stopped holding a charge during production work.
- AG3 and AGEZ platform fit: These camcorders share a common 6V battery bay, connector pinout, and BMS voltage threshold. The same cell works across this range because the camera body reads charge state from voltage curve — not a digital authentication chip.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the AG3 body. The BMS accepted the cell on first install without a power cycle, and voltage stayed stable across mid-discharge where Ni-MH cells typically show a flat plateau before the final drop.
- Ni-MH conditioning on first use: Ni-MH chemistry benefits from a full charge delivered through the OEM charger or camera body before the first shoot. This lets the BMS map the cell's discharge curve and display an accurate battery-remaining reading on the viewfinder.
Why the AG3 battery indicator reads empty on a new fully charged cell
Panasonic's AG-series cameras track remaining charge by mapping voltage to a lookup table calibrated on the original cell's discharge curve. A fresh replacement cell hasn't been through a full cycle inside the camera, so the body has no calibration reference. The indicator can show near-empty or drop suddenly mid-shoot even when the cell is healthy. One complete charge cycle run from inside the camera or OEM charger resets this.
Battery percentage jumping erratically during recording
Ni-MH cells have a flat mid-discharge voltage plateau — the camera reads the same voltage whether the cell is at 80% or 40% remaining. When the voltage finally begins to drop, the indicator catches up fast and the percentage jumps several steps at once. This is normal Ni-MH behaviour, not a faulty cell. If the display is erratic from the first charge, run one full cycle to 5.4V terminal voltage and recharge completely before shooting.
Compatible Models
Technical Specifications
Product Highlights
- Brand: Panasonic
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
The AG3 viewfinder shows a dead battery symbol right after I installed the new cell — is it actually discharged?
Not necessarily. The AG3 BMS has no stored discharge reference for a new cell, so it defaults to a low or empty reading until it can map the voltage curve. Charge the replacement fully through the OEM charger or camera body first, then power on. After one complete charge cycle the indicator will read accurately.
My shot count is much lower than I expected — the battery drains faster than the old one did when it was new.
Ni-MH cells ship in a partially discharged state and the first few cycles show lower capacity than rated. Full capacity typically appears after two to three complete charge and discharge cycles. If capacity remains low after three cycles, check that the camera body's charging contacts are clean — oxidised contacts reduce charge current and the cell never reaches a full state of charge. Wipe contacts with a dry cloth and run another full cycle.
The battery percentage drops suddenly from around 20% to zero and the camera shuts off mid-shot.
This is the Ni-MH voltage cliff — the cell holds a flat discharge plateau down to roughly 5.4V, then voltage drops sharply. The camera's indicator hasn't had time to update before the low-voltage cutoff triggers. It's not a fault with the cell. Treat the 20% warning as your cue to swap cells on set, and charge the depleted cell immediately to avoid leaving it sitting at the cutoff voltage.
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