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Rectangular lithium polymer battery pack with connector cable, black finish

Battery for BOSE SoundLink Flex PN 83289 3400mAh 12.58Wh

SKU CH-NWXW-G98VB

Replacement lithium-polymer battery for the BOSE SoundLink Flex, 3400 mAh at 3.7 V (12.58 Wh), part number 83289

  • Battery typeLithium polymer
  • Battery capacity3,400 mAh
  • Battery voltage rating3.7 V
  • Product typeLithium polymer
  • Direct replacement for BOSE SoundLink Flex part 83289
  • 3400 mAh capacity restores original runtime
  • 58 Wh energy matches factory specification
  • 7 V lithium-polymer chemistry ensures safe operation
  • Built-in protection guards against overcharge and short circuit

Replacement Battery for BOSE SoundLink Flex 83289

This lithium-polymer cell delivers 3400 milliamp hours at 3.7 volts, matching the original 12.58 watt-hour specification. It is built to the same dimensions and connector layout as the factory pack, so it fits the speaker without modification. The integrated protection circuit guards against overcharge, over-discharge, over-voltage and short-circuit conditions. Supplied new and fully decoded, it works immediately after installation.

For owners of a BOSE SoundLink Flex needing

The part number 83289 must match the label on your original battery; otherwise the connector or firmware handshake may differ. Users who cannot open the speaker enclosure or who prefer an authorised service repair should look elsewhere. The pack is intended for indoor or outdoor portable use exactly as the original design allows. No other BOSE models are supported by this specific part number.

Includes shock-absorbing foam insert for transit

No tools, adhesive strips or external charger are bundled in the package. Installation videos are available online, but the buyer must provide any screwdrivers or opening picks required. The 12-month manufacturer warranty and 24-hour email support are handled directly by the brand, not by the retailer. A new cell reaches full capacity after two or three complete charge-discharge cycles.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $15.99
Pricier than about 70% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameCameron sino
Model nameBOSE SoundLink Flex
Part numberBOSE 83289
Product typeLithium polymer
Power
Battery typeLithium polymer
Battery capacity3,400 mAh
Battery voltage rating3.7 V

Questions about this item

Do I need a Torx or tri-wing screwdriver to open the SoundLink Flex for the 83289 battery swap?

The speaker uses internal clips and adhesive; a plastic pry tool and small Phillips screwdriver are typically sufficient to reach the 3.7 V lithium-polymer pack.

Will the replacement 3400 mAh cell charge correctly with the original USB-C cable and the speaker's built-in charging circuit?

Yes, the decoded chip matches the factory handshake so the stock USB-C charger regulates voltage and current exactly as it did with the original 12.58 Wh pack.

How can I verify the new 83289 battery is calibrated after the first few charge cycles?

Run two or three full charge-discharge cycles; the speaker's battery indicator will then report capacity accurately and playback time will stabilise near the rated 3400 mAh.

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