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Small rectangular lithium-ion battery pack, dark finish, thin profile

Cameron Sino Battery Bose 419811 QC35 QuietComfort 35 400mAh 3.7V

SKU CH-2DGM-7XNT5

Replacement lithium-ion cell restores 400 mAh at 3.7 V for Bose QC35 QuietComfort 35 headsets

  • Battery pack size47 × 10 × 10
  • Battery capacity400 mAh
  • Battery voltage rating3.7 V
  • Details47 × 10 × 10
  • Compatible with Bose QC35 and QuietComfort 35 models
  • 400 mAh capacity restores original wireless headset runtime
  • 7 V lithium-ion cell matches factory voltage spec
  • Compact 47.00 x 10.00 x 10.00 mm fits battery compartment
  • Certified to ISO9001, RoHS and CE safety standards

Replacement Battery for Bose QC35 Headsets

This Cameron Sino lithium-ion cell replaces the original Bose AHB110520CPS pack in QuietComfort 35 and model 419811 headphones. It delivers 400mAh at 3.7V and matches the factory dimensions of 47.00 x 10.00 x 10.00mm. The pack weighs 7.8g and includes a decoded chip for correct fuel-gauge reporting. Protective foam is supplied for transit safety.

For Owners Needing a Direct Swap

Suits users whose QC35 or 419811 headset no longer holds a charge and who are comfortable opening the earcup to replace the cell. Not for buyers who want a higher-capacity upgrade, a different chemistry, or a battery for any other headphone model. The 1.48Wh rating is fixed and cannot be altered by this part.

Check Model and Part Number First

Verify the headset shows model 419811, QC35 or QuietComfort 35 and that the original battery bears part number AHB110520CPS. Confirm the connector layout matches the photo before ordering. Plan for two to three full charge cycles to reach rated capacity and avoid chargers not approved for the headset.

How it compares

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

Price $13.99
Pricier than about 63% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameCameron Sino
Model name419811, QC35, Quietcomfort 35
Part numberAHB110520CPS
Power
Battery capacity400 mAh
Battery voltage rating3.7 V
In the box
Battery pack size47 × 10 × 10

Questions about this item

Which Bose headset models accept the 400 mAh 3.7 V battery with part number AHB110520CPS?

This battery fits Bose 419811, QC35 and QuietComfort 35 wireless headsets.

Will the original charger and firmware recognise the replacement cell after installation?

The fully decoded chip works like the original so the headset charges and reports capacity normally.

How can I confirm the new cell is performing correctly once installed?

After two or three full charge and discharge cycles the headset should reach its normal runtime and show accurate battery level.

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