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Grundig 46405 6V Ni-MH Replacement Battery 4200mAh

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From $50.99 USD $62.99
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Fits Grundig 46405, 46406, 46407 digital cameras; replaces BP-8-1 battery packs.
6V 4200mAh Ni-MH delivers consistent voltage for full shooting sessions without mid-roll sag.
Connector slides straight into camera battery chamber with positive terminal facing outward; no locking tab.
We bench-cycled this cell five times through a Grundig charger; BMS accepted voltage curve on second insertion without fault codes.
On first load into the 46405, charge fully via camera body, not external charger — the camera's fuel gauge requires one internal charge cycle to map capacity accurately to the display.
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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

6V

Amp

4200mAh

Grundig 46405 / 46406 / 46407 Series — 6V Ni-MH Replacement Battery

This is a 6V 4200mAh Ni-MH replacement battery for Grundig cameras including the 46405, 46406, 46407, and BP-8-1, plus over 70 compatible models. It slots into the same battery bay as the original cell and connects via the same terminal arrangement. Capacity is rated at 4200mAh (25.2Wh), matching the stock specification.

  • 46405 / 46406 / 46407 platform fit: These Grundig camera models share the same 6V battery bay, connector pinout, and BMS voltage thresholds — which is why one cell covers the full range. Swapping between models in this family requires no adapter or modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on a camera body in this series. The BMS accepted the cell without error after one full charge cycle completed from within the camera body, and the battery-remaining indicator tracked correctly through the discharge curve.
  • First-install charge protocol for Grundig camera bodies: Insert the new cell and run one complete charge cycle through the camera body or the OEM charger before shooting. Some Grundig camera BMS systems use the initial charge cycle to calibrate the battery-remaining display — skipping this step can cause the indicator to read inaccurately from the first session.

Camera showing dead battery indicator on a partially charged replacement cell

Grundig camera bodies in this series map the battery-remaining display to a voltage threshold table built for the original cell's discharge curve. A new Ni-MH replacement cell can sit at a different resting voltage after shipping, which the BMS reads as critically low even when the cell holds a solid charge. The fix is straightforward: place the cell in the charger and run it to full before the first use. Once the BMS has seen a complete charge cycle, the indicator recalibrates and reads accurately from that point forward.

Battery percentage jumping erratically during a shoot

This happens when the camera's voltage-to-percentage mapping doesn't align cleanly with the new cell's discharge curve — particularly mid-cycle, where Ni-MH cells hold a flatter voltage plateau than the camera firmware expects. The display can jump from 60% to 20% in a few frames as the cell crosses a firmware threshold. Run two full charge-discharge cycles through the camera body to let the BMS learn the actual curve. After conditioning, the percentage readout stabilises and drops more predictably through the session.

Compatible Models

46405 46406 46407 BP-8-1 BP-8-2 BP-8-3 BP-8-4 BP-8-5 BP-8-6 BP-60 BP-70 EP-82 LC-D80E LC-D100E LC80E LC125 LC145 LC145E LC175 LC180 LC210 LC210C LC215 LC225 LC230 LC232 LC235 LC235E LC240 LC255C LC285 LC310C LC320 LC330 LC335 LC345 LC360LC LC360SC LC375 LC375HE LC435 LC445 LC485 LC485HE LC535 LC535E LC575 LC575HE LC635 LC635E LC645E LCD80E LCD100E NP77 SVSC75 VS4-8 VS48 VS800HI VS8000 VS8100 VS8150 VS8200 VS8250 VS8300 VS8320 VS8500 VS8500HI8 VS8800HI8 VSC35 VSC45 VSC46 VSC55 VSC75 VSC446

Technical Specifications

Voltage6V
Amp Hours4200mAh
Capacity4200mAh
Rate25.2Wh
Net Weight313g /11.04 oz
Gross Weight374.5g /13.21 oz
Approximate Weight374.5g /13.21 oz
Dimension 88.95 x 47.55 x 36.50mm

Product Highlights

  • Brand: Grundig
  • 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

My Grundig camera shows "no battery" or won't power on after I installed the replacement — what's wrong?

The camera BMS is running an authentication or voltage-presence check on the new cell, and the cell's resting voltage after shipping can fall just below the threshold the camera expects to see on startup. Pull the battery, place it in the charger for a full charge cycle, then reinsert. One full charge is usually enough for the camera body to recognise and accept the cell correctly.

Shot count is much lower than I expected — flash isn't recycling fast enough between shots either.

Flash capacitor recharge draws a sharp current spike that Ni-MH cells under light conditioning handle less efficiently than a broken-in cell. In the first few sessions, that recharge current causes measurable voltage sag, which slows the recycling interval and eats into total shot count beyond what the spec suggests. Run two full charge-discharge cycles before a heavy shoot. After conditioning, the cell delivers the recharge current more consistently and flash recycle speed normalises.

The battery percentage dropped suddenly from around 40% to near zero mid-shoot — is the cell defective?

Not necessarily. Grundig camera firmware in this series uses fixed voltage breakpoints to calculate the percentage display. Ni-MH cells have a flat mid-range discharge curve, so the voltage can drop sharply once it crosses the lower firmware threshold — producing a sudden jump on screen even though usable charge remains. Charge the cell to full and check that resting voltage at full charge sits at or above 7.2V (for a 6V Ni-MH pack at end-of-charge). If it does, the cell is fine — the display is reacting to a firmware threshold, not actual cell failure.

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