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Small rectangular lithium-polymer battery pack, dark finish, 47 by 10 by 10 mm, 7.8 g

Cameron Sino Replacement Battery Bose 419811 QC35 400mAh 3.7V

SKU CH-S336-XENWW

A 400 mAh lithium-polymer cell replaces the original battery in Bose QC35 headsets

  • Specifications47.00 x 10.00 x 10.00
  • Typelithium_polymer
  • Battery Pack47.00 x 10.00 x 10.00
  • Battery Typelithium_polymer
  • Battery Capacity400.00 milliamp_hours
  • Battery Voltage3.70 volts
  • Compatible with Bose 419811, QC35 and QuietComfort 35 headsets
  • 400 mAh capacity and 3.7 V voltage match original specs
  • Lithium-polymer cell weighs 7.8 g and measures 47.00 x 10.00 x 10.00 mm
  • Built-in protection against overcharge, over-discharge and short circuit
  • Certified to ISO 9001, RoHS and CE standards

Bose QC35 replacement battery

The Cameron Sino unit replaces the original Bose 419811 cell in QuietComfort 35 headsets. It delivers 400mAh at 3.7V and matches the OEM footprint of 47.00 x 10.00 x 10.00mm. A decoded chip reports charge status exactly like the factory pack.

Low self-discharge polymer chemistry

Lithium-polymer construction keeps self-discharge minimal during storage. The 1.48Wh capacity restores original run-time without increasing heat or weight beyond the 7.8g spec. Over-charge, over-discharge and short-circuit protection circuits are integrated on the pack.

Direct-fit connector and shock-protected packaging

The pack uses the same connector orientation as the Bose AHB110520CPS, so no soldering or adapter cables are required. Foam-lined packaging protects the cell during transit. Installers should verify the device model number before opening the headset.

Highlights

  • Compatible with Bose 419811, QC35 and QuietComfort 35 headsets
  • 400 mAh capacity and 3.7 V voltage match original specs
  • Lithium-polymer cell weighs 7.8 g and measures 47.00 x 10.00 x 10.00 mm
  • Built-in protection against overcharge, over-discharge and short circuit
  • Certified to ISO 9001, RoHS and CE standards

Specifications

BrandCameron Sino
Model419811, QC35, Quietcomfort 35
Part NumberAHB110520CPS
Specifications47.00 x 10.00 x 10.00
Typelithium_polymer
Battery Pack47.00 x 10.00 x 10.00
Battery Typelithium_polymer
Battery Capacity400.00 milliamp_hours
Battery Voltage3.70 volts

Questions about this item

How do I install the 47.00 x 10.00 x 10.00 mm lithium polymer pack into my QC35 and what step do people skip?

Open the headset, disconnect the old pack, connect the new AHB110520CPS connector firmly until it clicks, then reassemble; the step most people skip is fully seating the connector before closing the housing.

What maintenance or replacement will this 400mAh 3.7V cell need later?

After 2 or 3 full charge and discharge cycles the cell reaches its best performance; no further maintenance is required other than avoiding storage above 60 °C and using a quality charger.

What limit appears first during sustained use of the 1.48Wh battery?

The 400mAh capacity sets the runtime ceiling; under continuous load the headset will shut down once the cell voltage drops to its protection threshold.

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