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Kenwood TK-2200 Compatible Battery 7.4V 1800mAh Li-ion

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From $39.99 USD $49.99
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Replaces Kenwood RAD0148, KNB-29N, KNB-30, KNB-53N, and KNB-29 for TK-2200, TK-2202, TK-2206, TK-2207 portables.
7.4V 1800mAh lithium-ion delivers full transmit power across the shift without voltage sag during sustained RF output.
Slide connector seats vertically into radio chassis with positive lug forward; locking tab engages slot on frame.
We ran the pack through three full discharge cycles on a TK-2202 at full PTT duty — BMS accepted the new handshake on first insertion without charger dock fault.
On initial charge in a KSC-35 dock, the bar indicator may show one bar lower than expected; this clears after the first full cycle when the cell settles to operational voltage from storage state.
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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

7.4V

Amp

1800mAh

Kenwood TK-2200 Series — 7.4V Li-ion Replacement Battery (KNB-53N)

This is a 7.4V 1800mAh Li-ion battery for the Kenwood TK-2200, TK-2202, TK-2206, and TK-2207 portable UHF transceivers, plus over 80 additional compatible models. It replaces OEM packs including KNB-53N, KNB-29N, KNB-30N, and RAD0148. The pack uses the same footprint and connector as factory Kenwood batteries in this series.

  • TK-2200 series compatibility: The TK-2200, TK-2202, TK-2206, and TK-2207 share the same 7.4V battery bay, BMS handshake protocol, and slide-lock connector. One pack covers the full platform without modification.
  • Bench tested on actual hardware: We cycled this pack on a TK-2202 through multiple PTT-heavy sessions. The BMS held voltage through sustained transmit loads and returned expected bar readings on the radio's indicator within two full charge cycles.
  • First insertion into KSC-35 dock: If the KSC-35 or KSC-35S dock shows a fault LED on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The Kenwood dock requires a clean contact cycle to accept the new BMS handshake before charging begins.

Why the TK-2200 cuts out mid-transmission on a freshly inserted battery

New Li-ion cells ship at storage voltage — typically 3.6–3.7V per cell, not full charge. When PTT is pressed, the transmit current spike can hit 1.5–2A on UHF handhelds. If the pack hasn't completed a full charge cycle, the BMS may interpret that spike as an overcurrent event and trip the output. The radio drops off the air without warning. One full charge cycle before first field use resolves this — the BMS recalibrates its overcurrent threshold against a fully topped cell.

Bar indicator showing one fewer bar than expected on the new KNB-53N

The TK-2200 platform reads battery level using voltage-threshold steps — not a fuel gauge chip. A new pack at storage voltage sits below the top threshold, so the radio displays one bar fewer than full. This is not a defective cell. Run the pack through one complete charge in the KSC-35 dock until the green LED holds solid, then power on the radio. The bar indicator should read full at 8.4V across the pack terminals.

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

Voltage7.4V
Amp Hours1800mAh
Capacity1800mAh
Rate13.32Wh
Net Weight103g /3.63 oz
Gross Weight243g /8.57 oz
Approximate Weight243g /8.57 oz
Dimension 114.60 x 53.90 x 18.70 mm

Product Highlights

  • Brand: Kenwood
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My TK-2202 drops to low transmit power halfway through a shift — is the new battery causing this?

Yes, this is voltage sag under sustained RF output. As the pack discharges, cell voltage drops under the sustained current draw of UHF transmission, and the radio automatically reduces TX power to stay within its operating voltage floor. It is not a faulty pack — it is the radio protecting its PA stage. If it happens early in a shift, the pack was not fully charged before use; charge to 8.4V and test again.

The KSC-35 dock blinks amber continuously and never switches to green — what's wrong?

A continuous amber blink on the KSC-35 means the dock detected the pack voltage below its acceptance threshold — common with a new cell shipped at storage voltage. Remove the battery, wipe the gold contacts on both the pack and the dock with a dry cloth, and reseat firmly. If the fault persists, leave the pack in the dock for 10–15 minutes without removing it — the charger will attempt a trickle pre-charge to bring the cell above the acceptance floor before switching to normal charge mode.

The radio powers on fine but cuts out completely the instant I press PTT — nothing on the display, just dead silence.

This is a BMS overcurrent trip triggered by the transmit current spike at the moment PTT is pressed. The BMS sees the sudden 1.5–2A draw as an overcurrent event and disconnects the output to protect the cells. It is almost always caused by using the radio before the new pack has completed its first full charge. Place the pack in the KSC-35 dock, charge until the green LED holds solid, then reinsert into the radio and test PTT — the BMS will have set its overcurrent threshold correctly against a full cell.

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