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Rectangular lithium-ion battery pack with dark plastic casing and metal contacts

BatteryJack inc.

BatteryJack inc. Replacement Kenwood KNB-33L 1800 mAh Li-ion Battery for TK-5210GK2, TK-5210GK3 two-way radio

SKU CH-6VCF-6A1SS

1800 mAh 7.4 V Li-ion battery powers compatible Kenwood TK-5210 and TK-5310 two-way radios

  • Reliable power for extended shifts with 1800 mAh capacity
  • Withstands repeated 6-foot drops on all sides without damage
  • Compatible with Kenwood TK-5210GK2 and TK-5210GK3 radios
  • Built with premium-grade lithium-ion cells for consistent performance
  • Backed by an 18-month warranty for lasting confidence

Replacement battery for Kenwood two-way radios

This 7.4 V lithium-ion cell replaces the Kenwood KNB-33L pack and delivers 1800 mAh of capacity. It fits a wide range of Kenwood portable models including the TK-2180, TK-3180, TK-5210 and TK-5310 series. The battery is built with high-grade cells and ships new.

Capacity and voltage match

The single specification that decides fit is the 7.4 V, 1800 mAh rating which matches the original KNB-33L pack. Using a cell with a different voltage or capacity will prevent the radio from operating correctly or reporting charge status accurately.

Thermals, noise and power draw

Lithium-ion chemistry produces no audible noise and minimal heat during normal transmit and receive cycles. The pack draws only the current the radio requests and does not add measurable thermal load to the handset.

How it compares

Measured against everything we stock in Walkie-Talkies & CB Radios, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 80% of the 1,062 comparable items (median $34.99).

Specifications

No published specifications for this item yet.

Questions about this item

What does the 1800 mAh rating mean for daily radio use?

It indicates the charge capacity of the lithium-ion cell; a fully charged pack will typically power a compatible Kenwood portable radio through a standard shift before needing a recharge.

What voltage does the 7.4 V pack deliver to the radio?

The pack supplies a nominal 7.4 V, matching the original KNB-33L specification so the radio receives the correct operating voltage without modification.

Will this battery fit the TK-5210GK2 and TK-5210GK3 models?

Yes, it is built to the same form factor as the Kenwood KNB-33L and locks into the battery rail on TK-5210GK2, TK-5210GK3 and the other listed Kenwood portables.

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