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Small rectangular lithium battery pack 38.3 x 30.0 x 7.8mm 800mAh 3.7V 2.96Wh 41.0g

Estry

Estry standard battery 800mAh 3.7V for Bose QuietComfort Earbuds Charging 762936HV-1

SKU CH-53W4-0NAXK

Replacement lithium battery restores power to Bose QuietComfort Earbuds charging case with 800mAh capacity and 3.7V output

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeLithium
  • Battery Capacity800mAh
  • Battery Voltage3.7
  • Exact-spec replacement restores original runtime
  • 800mAh 3.7V lithium cell matches factory capacity
  • Built-in protection guards against overcharge and short circuit
  • Certified to ISO 9001, RoHS, CE, UN38.3 and MSDS
  • Compact 38.3 x 30.0 x 7.8mm form fits charging case

Replacement battery for Bose QuietComfort Earbuds

The Estry lithium cell matches the original 762936HV-1 specification at 3.7V and 800mAh. It fits the charging case dimensions of 38.3 x 30.0 x 7.8mm and weighs 41.0g. Safety circuits guard against overcharge, over-discharge, over-voltage and short circuits. The pack is certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards.

Direct swap for the factory-fitted cell

This single-pack unit replaces a depleted or aged original battery without soldering or modification. The jump is worthwhile when the case no longer holds a full charge or shows reduced playback time. Restoring the 2.96Wh capacity returns the earbuds to their intended recharge cycles.

Owners of QuietComfort Earbuds needing a case

Suits users who have verified the 762936HV-1 part number and want a tested, certified lithium replacement. Not for buyers whose case uses a different cell format, who require a multi-pack bundle, or who need a higher-capacity alternative than 800mAh.

Highlights

  • Exact-spec replacement restores original runtime
  • 800mAh 3.7V lithium cell matches factory capacity
  • Built-in protection guards against overcharge and short circuit
  • Certified to ISO 9001, RoHS, CE, UN38.3 and MSDS
  • Compact 38.3 x 30.0 x 7.8mm form fits charging case

Specifications

BrandBose
TypeBatteries
Battery Pack1-pack
Battery TypeLithium
Battery Capacity800mAh
Battery Voltage3.7

Questions about this item

Will the 38.3 x 30.0 x 7.8 mm battery fit inside the Bose QuietComfort Earbuds charging case?

Yes, the 38.3 x 30.0 x 7.8 mm dimensions match the original 762936HV-1 cell for the QuietComfort Earbuds charging case.

What is the correct polarity orientation when soldering the 3.7 V 800 mAh cell?

Align the positive and negative pads exactly as the factory cell; reversing them triggers the protection circuit and prevents charging.

When should I replace the 2.96 Wh lithium pack?

Replace it when run-time drops noticeably or the case fails to hold a full charge after a normal cycle.

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