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Rectangular black lithium-ion battery pack with label showing 1800mAh 7.4V

BatteryJack inc.

BatteryJack inc. Replacement Kenwood KNB-33L 1800mAh 7.4V Li-Ion Battery

SKU CH-KDG8-X5WDS

Replacement 7.4 V 1800 mAh lithium-ion battery fits Kenwood TK-2180, TK-3180, TK-5210 and TK-5310 series radios

  • 1800 mAh capacity powers Kenwood radios longer
  • 4 V lithium-ion chemistry matches OEM specification
  • Drop-tested from six feet on all six sides
  • Compatible with TK-2180, TK-3180, TK-5210 and TK-5310 series
  • 18 month warranty backs the replacement battery

Replacement Kenwood KNB-33L Battery

This 7.4V 1800mAh lithium-ion pack replaces the Kenwood KNB-33L for compatible two-way radios. It fits models including the TK-2180, TK-3180, TK-5210 and TK-5310 series. The cell uses high-grade components and meets or exceeds OEM specifications. It is a direct swap for the original equipment battery.

1800mAh Capacity and Runtime

The 1800mAh rating provides a full shift of talk time for typical dispatch or security use. Heavy transmit cycles will drain the pack faster than standby monitoring. Users running continuous high-power transmission should plan for a mid-day swap. The 7.4V nominal voltage matches the radio's power input requirements exactly.

Drop-Tested Durability for Field Use

The housing survives six drops from six feet onto concrete on every face without cracking or power loss. This ruggedness suits construction, event staff and public-safety crews who clip the radio to a belt. The 18-month warranty covers defects in materials and workmanship. Radios requiring a different voltage or connector are not compatible.

How it compares

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

Price $22.99
Cheaper than about 75% of the 1,062 comparable items (median $34.99).

Specifications

No published specifications for this item yet.

Questions about this item

Will this 7.4V 1800mAh Li-Ion pack fit the TK-2180K2 I already use?

Yes — it is listed as compatible with the TK-2180, TK-2180K and TK-2180K2 portable radios.

How can I confirm the battery is delivering the rated 1800mAh after I install it?

Charge it fully, then run the radio on a typical duty cycle; the operating time should match the runtime you previously got from an OEM KNB-33L pack.

Does the package include a charger or only the battery itself?

Only the replacement battery is supplied; a compatible Kenwood charger must be purchased separately.

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