We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small rectangular lithium-ion battery pack, matte finish, connector on one end

Cameron & Co

Cameron & Co 40229 NTA2358 Battery for Bose QC3 200mAh

SKU CH-RX56-2KMK5

Replacement lithium-ion cell restores 200 mAh capacity to Bose QC3 headsets

  • Specifications39.27 x 26.76 x 13.44
  • Typelithium_ion
  • Battery Pack39.27 x 26.76 x 13.44
  • Battery Typelithium_ion
  • Battery Capacity200 milliamp_hours
  • Battery Voltage3.7 volts
  • Direct replacement for Bose QC3 40229 and 40228 headsets
  • 200 mAh lithium-ion cell delivers 3.7 V operating voltage
  • Compact 39.27 × 26.76 × 13.44 mm form factor fits original cavity
  • Built-in overcharge, over-discharge and short-circuit protection safeguards the headset
  • ISO 9001, RoHS and CE certified for safety and quality compliance

Direct Replacement for Bose QC3

This lithium-ion battery replaces the original Bose 40229 and NTA2358 cells used in the QC3 wireless headset. It delivers 200mAh at 3.7V with a fully decoded chip that communicates with the headset exactly like the factory pack. The pack measures 39.27 x 26.76 x 13.44mm and weighs 62g, matching the original form factor for a tool-free swap.

Capacity and Voltage Match

The single specification that determines fit is the 200mAh / 0.74Wh capacity at 3.70V, which mirrors the OEM rating. A different capacity or voltage would prevent the headset from reporting charge correctly or could trigger protection circuits, so this exact figure confirms compatibility with the Bose 40228 and 40229 part numbers listed.

Steady Discharge Over Hours

Under the continuous, low-current draw of a noise-cancelling headset, the cell maintains a stable voltage curve through the full discharge cycle rather than sagging under brief peaks. Built-in overcharge, over-discharge, over-voltage and short-circuit protection guards the pack during overnight charging and extended listening sessions, while the ISO9001, RoHS and CE certifications confirm consistent manufacturing quality.

Highlights

  • Direct replacement for Bose QC3 40229 and 40228 headsets
  • 200 mAh lithium-ion cell delivers 3.7 V operating voltage
  • Compact 39.27 × 26.76 × 13.44 mm form factor fits original cavity
  • Built-in overcharge, over-discharge and short-circuit protection safeguards the headset
  • ISO 9001, RoHS and CE certified for safety and quality compliance

Specifications

BrandCameron Sino
ModelBattery
Part Number4894128038412
Specifications39.27 x 26.76 x 13.44
Typelithium_ion
Battery Pack39.27 x 26.76 x 13.44
Battery Typelithium_ion
Battery Capacity200 milliamp_hours
Battery Voltage3.7 volts

Questions about this item

How long will the 200 mAh capacity last in a Bose QC3 headset?

The 200 mAh / 0.74 Wh lithium-ion cell matches the original specification, so runtime should be equivalent to a fresh factory battery under the same usage conditions.

Does the 3.7 V lithium-ion cell charge through the headset's standard connector?

Yes, the fully decoded chip communicates with the QC3 charging circuit exactly like the original pack, so the headset's own charger manages the 3.7 V cell without any extra hardware.

Will the 39.27 × 26.76 × 13.44 mm pack fit inside the QC3 earcup?

Those dimensions match the OEM battery cavity for the Bose QC3 models 40228 and 40229, so the pack sits flush and the connector aligns with the socket.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.