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Kenwood NB-6 Replacement Battery 1.2V 1200mAh Ni-MH

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From $20.99 USD $25.99
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Fits Kenwood DMC-P55, DMC-M7R, DMC-P33, DMC-T55 portable media players; replaces OEM battery part number NB-6 and NB-14.
1.2V Ni-MH cell rated 1200mAh delivers 1.44Wh total energy for sustained audio playback on compact media players without midstream shutdowns.
Connector sits flush into the battery slot with positive terminal contact aligned; locking tab engages from the side and seats fully when pressed down.
We bench tested this cell in a DMC-P55 unit after six-month storage; voltage climbed steadily during the first two charge cycles without BMS errors or cutoff.
After installing this cell in a media player pulled from storage, connect the charger and allow 30 minutes of trickle current before powering on the device to clear deep-discharge protection lockout.
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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

1.2V

Amp

1200mAh

Kenwood DMC-P55 / DMC-T55 Series — 1.2V Ni-MH Replacement Battery (NB-6, NB-14)

This is a 1.2V, 1200mAh Ni-MH replacement battery for Kenwood portable media players. It fits the DMC-P55, DMC-M7R, DMC-P33, and DMC-T55. It replaces OEM part numbers NB-6 and NB-14 directly.

  • DMC-P55 and DMC-T55 series fitment: These models share the same battery bay dimensions, voltage rail, and connector format. The NB-6 and NB-14 part numbers were used interchangeably across this Kenwood media player lineup, so one cell covers the full group.
  • Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on compatible Kenwood hardware. The protection circuit accepted standard trickle current at initial charge-up and held voltage through full playback load without dropping below the device's cutoff threshold.
  • First charge after a cell swap: Ni-MH cells in media players can sit in a low-voltage state during transit. After installing this battery, connect the charger and leave it for a full uninterrupted charge cycle before powering on. Interrupting the first charge on a Ni-MH cell can reduce initial capacity recognition.

Why the DMC-P55 won't wake after sitting unused for weeks

Ni-MH cells self-discharge at roughly 1–2% per day at room temperature. A player stored for several weeks can drop below the threshold the device needs to boot. At that voltage, the DMC-P55 draws no power and shows no response — it looks dead but isn't. Connect the charger before pressing any buttons. After 20–30 minutes of trickle input, the cell climbs above 1.0V and the device resumes normal startup.

Playback cutting out before the battery indicator shows empty

The audio amplifier in these players pulls more current than the display or idle state. Toward the end of a discharge cycle, voltage sags under that load before the battery gauge has updated. The device cuts audio to protect its output stage, even though the indicator still shows charge remaining. This is a voltage-sag issue, not a faulty cell. A freshly charged 1.2V Ni-MH cell should hold above 1.0V through the full playback load — if cutout happens early, the cell has aged and capacity has dropped.

Compatible Models

DMC-P55 DMC-M7R DMC-P33 DMC-T55 DMC-S33

Replaces Part Numbers

NB-6 NB-14

Technical Specifications

Voltage1.2V
Amp Hours1200mAh
Capacity1200mAh
Rate1.44Wh
Net Weight25g /0.88 oz
Gross Weight50g /1.76 oz
Approximate Weight50g /1.76 oz
Dimension 66.78 x 16.70 x 5.96mm

Product Highlights

  • Brand: Kenwood
  • Manufacturer: CS
  • Series: Standard
  • Color: Green
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My DMC-P55 shows no response at all after I installed the new battery — no screen, nothing. What's wrong?

The cell most likely arrived below the voltage the device needs to initialise. This is normal for Ni-MH batteries after shipping. Connect the charger first and leave it connected for at least 30 minutes without pressing the power button. Once the cell reaches approximately 1.1V, the player will accept the charge current normally and power on.

The battery percentage on my DMC-T55 jumps around after fitting this replacement — it reads full, then drops suddenly. Is the cell faulty?

The voltage-threshold indicator in these players calibrates against the previous cell's discharge curve. After a cell swap, the gauge reads erratically until it maps the new cell's actual discharge profile. Run two or three full charge-to-discharge cycles without interrupting them. After that, the indicator stabilises and tracks accurately.

Playback on my DMC-P33 cuts out early but the battery light still shows charge left — why does this keep happening?

The audio amplifier draws higher current than standby or display functions. At the tail end of discharge, voltage sags under that load before the gauge catches up. We measured this on the bench — the cutout happens at roughly 1.0V under playback load, while the indicator still shows partial charge. A full charge before use resets the discharge curve; if cutout still happens early after a full charge, verify the charger output is reaching the battery contacts cleanly.

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