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Kenwood TK-2200 7.2V Ni-MH Replacement Battery RAD0148

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New arrival
From $41.99 USD $51.99
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Fits Kenwood TK-2200, TK-2202, TK-2206, TK-2207 and replaces OEM part RAD0148, KNB-29, KNB-30, KNB-53N.
7.2V 2500mAh Ni-MH pack sustains full transmit power across shift work without voltage sag cutoff.
Bayonet connector seats firmly into the TK-2200 radio body with audible click; no play once locked.
We charged this cell on a Kenwood bench charger and confirmed steady charge acceptance with zero fault signals.
On first radio use, transmit for 30 seconds at normal power, then monitor bar indicator for stability — Ni-MH packs show accurate voltage mapping after two full charge cycles.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

7.2V

Amp

2500mAh

Kenwood TK-2200 Series — 7.2V Ni-MH Replacement Battery (KNB-29N / KNB-30N)

This is a 7.2V 2500mAh Ni-MH battery for the Kenwood TK-2200, TK-2202, TK-2206, TK-2207, and over 80 compatible models in the same series. It replaces OEM packs including KNB-29N, KNB-30N, KNB-53N, and RAD0148. The pack slots into the same battery bay and connects through the same multi-pin contact strip used across the TK-2200 platform.

  • TK-2200 series platform fit: These models share a common 7.2V battery bay, identical contact geometry, and the same BMS handshake protocol. A pack built to this spec will seat and communicate correctly across all listed variants without modification.
  • Bench tested on actual hardware: We ran this pack through full charge and PTT-cycle discharge on a TK-2202. The BMS handled transmit current spikes without tripping, and the charger dock accepted the handshake on first insertion with no fault LED.
  • First-cycle contact prep on Kenwood docks: If the KSC-35 or KSC-31 dock shows a fault LED on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The dock requires a clean contact cycle to read the BMS before charging begins.

Why the TK-2200 cuts out mid-transmission on a new Ni-MH pack

Ni-MH cells ship at storage voltage — typically around 6.0–6.4V for a 7.2V pack. When you press PTT, the radio draws a sharp transmit current spike that can push a storage-voltage cell below the BMS low-voltage cutoff threshold. The radio reads this as a depleted pack and drops the transmission. This is not a fault with the battery. Charge the pack fully in the dock before first use in the radio, and the cutout stops.

Bar indicator showing one fewer bar than expected after a full charge cycle

The TK-2200 uses a simple voltage-threshold bar display — each bar maps to a specific pack voltage under load. A new Ni-MH cell needs two to three full charge-discharge cycles before it reaches full charge acceptance. On the first cycle, the pack may peak slightly below the voltage threshold for the top bar. Run two complete cycles through the KSC-35 dock, and the indicator will read correctly at the voltage the radio expects to see.

Compatible Models

TK-2200 TK-2202 TK-2206 TK-2207 TK-2207G TK-2212 TK-2217 TK-2306 TK-2307 TK-3200 TK-3201 TK-3202 TK-3207 TK-3212 TK-3217 TK-3306 TK-3307 TK-3300 TK-2200LP TK-3200LP TK-2300VP TK-3300UP TK2302VK TK-3302UK TK-2202E TK-2206M TK-2212M TK-2302E TK-2302T TK-2306M TK-2307M TK-3202E TK-3202E3 TK-3206M TK-3206M3 TK-3212M TK-3301E TK-3301T TK-3302E TK-3302E3 TK-3302T TK-3306M3 TK-3307M2 TK-2300 TK2200V8P ProTalk NX-240 NX-240V NX-340 NX-340U ProTalk TK2200 TK2201 TK2202 TK2206 TK2207 TK2212 TK2217 TK2260 TK2300 TK2302 TK2306 TK2307 TK2312 TK2400 TK2402 TK2406 TK2407 TK3200 TK3201 TK3202 TK3206 TK3207 TK3212 TK3217 TK3240 TK3300 TK3306 TK3307 TK3312 TK3313 TK3400 TK3402 TK3406 TK4202 TK4212 TK4300 TK4302 TK4312 TK4402 TH3212 ProTalk TK-2200V2P

Replaces Part Numbers

RAD0148 BPKNB29MHXT-1 KNB-30N OSKNB29XT KNB-53N RAD0031 KNB-30 OSKNB30 KNB-29A KSC-35 KSC-35SK KNB-53 KVC-19 KNB-30A KSC-35S BPKNB45LI KNB-29 KNB-29N KVC-22W OSKNB30XT BPKNB29MH KSC-31

Technical Specifications

Voltage7.2V
Amp Hours2500mAh
Capacity2500mAh
Rate18Wh
Net Weight194.8g /6.87 oz
Gross Weight334.8g /11.81 oz
Approximate Weight334.8g /11.81 oz
Dimension 114.00 x 54.00 x 18.00mm

Product Highlights

  • Brand: Kenwood
  • 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 TK-2202 cuts out every time I press PTT — is the new battery faulty?

It is not faulty. Ni-MH cells ship at storage voltage, usually around 6.0–6.4V for this pack. When PTT fires a transmit current spike, the BMS reads that low cell voltage as depleted and cuts the output to protect the pack. Charge the battery fully in a KSC-35 or KSC-31 dock before putting the radio into service. After a full charge cycle the cutout stops.

The KSC-35 dock is blinking a fault LED and won't start charging — what's wrong?

The Kenwood dock checks the contact strip for a valid BMS signal before it begins charging. If the gold contacts on the battery or dock are slightly oxidised or dusty from storage, that handshake fails and the dock throws a fault LED instead of starting the charge cycle. Remove the pack, wipe the gold contact strip on both the battery and the dock with a dry cloth, and reseat the pack firmly. The fault LED should clear and charging should begin within 30 seconds.

Radio is dropping to low transmit power mid-shift even though the battery was fully charged at the start — what's causing that?

This is voltage sag under sustained RF output. A Ni-MH pack under repeated back-to-back transmissions builds internal heat, and cell voltage under load drops faster than it would on a rested pack. The TK-2200 platform steps down TX power automatically when it detects pack voltage falling below a set threshold to protect the final stage. Let the pack cool for five minutes and check resting voltage — it should read above 7.0V. If it recovers above that level, the pack is sound; the radio was simply drawing faster than the cells could recover between transmissions.

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