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Small rectangular Li-Polymer battery, blue label, 37 by 17.7 by 4.77 mm

CameronSino

CameronSino Sennheiser DW Office Pro 1 2 30 OfficeRunner cell phone battery 180mAh 3.7V

SKU CH-8K8F-GD1P5

Replacement Li-Polymer battery for Sennheiser DW Office, Pro 1, Pro 2, Pro 30 and OfficeRunner headsets, 180 mAh, 3.7 V

  • 180 mAh capacity powers Sennheiser DW Office and Pro headsets longer
  • 7 V lithium-polymer chemistry matches original BATT-03 specifications exactly
  • Ultra-slim 4.77 mm profile fits DW Pro 1, Pro 2 and OfficeRunner battery compartments
  • ISO 9001, CE and RoHS certifications confirm safety and quality standards
  • Replaces Sennheiser part 504374 for DW Pro 30 and Office ML models

Compatible Sennheiser headsets

This replacement cell-phone battery fits Sennheiser DW Office, DW Pro 1, DW Pro 2, DW Pro 30, DW-Reihe, OfficeRunner, Pro 1 and Pro 2 wireless headsets. It matches the original Sennheiser part numbers 504374 and BATT-03 for direct compatibility.

Check model and part number

Before ordering, confirm that your headset model appears in the compatible list and that the existing battery carries part number 504374 or BATT-03. The physical dimensions are 37.00 x 17.70 x 4.77 mm, so verify the battery compartment can accept this size.

Sustained talk-time performance

The 180 mAh lithium-polymer cell delivers 0.67 Wh at 3.7 V, providing stable voltage throughout extended calls rather than a brief peak. ISO 9001, RoHS and CE certifications indicate consistent quality during repeated charge cycles.

Highlights

  • 180 mAh capacity powers Sennheiser DW Office and Pro headsets longer
  • 7 V lithium-polymer chemistry matches original BATT-03 specifications exactly
  • Ultra-slim 4.77 mm profile fits DW Pro 1, Pro 2 and OfficeRunner battery compartments
  • ISO 9001, CE and RoHS certifications confirm safety and quality standards
  • Replaces Sennheiser part 504374 for DW Pro 30 and Office ML models

Specifications

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Questions about this item

What comes with the battery and do I need to buy any tools or cables separately?

The package contains the 180mAh 3.7V Li-Polymer cell measuring 37.00 x 17.70 x 4.77 mm. No tools, cables or extra hardware are included; reuse the original headset screws and connector.

How do I confirm this is the correct version for my Sennheiser headset?

Match your headset model — DW Office, DW Pro 1, DW Pro 2, DW Pro 30, OfficeRunner or DW-Reihe — and the original battery part number 504374 or BATT-03 before ordering.

What does the 180mAh / 0.67Wh rating mean for daily talk time?

The 180mAh 3.7V cell restores the original capacity certified under ISO9001, RoHS and CE, delivering the same talk and standby duration the headset was designed for.

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