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Rectangular black lithium-polymer battery, 45.44 by 33.84 by 4.30 mm

Cameron & Co

Cameron & Co DS-CS-SXC550SL Battery 3.7V 650mAh 2.41Wh Black

SKU CH-EQ89-4FB4C

Replacement lithium-polymer battery restores power to Sennheiser MB 660 and PXC 550 wireless headsets, delivering 3.7 V, 650 mAh and 2.41 Wh in a 45.44 × 33.84 × 4.30 mm black cell

  • Replaces the original Sennheiser AHB413645PCT battery
  • 7 V 650 mAh Li-Polymer cell delivers 2.41 Wh
  • Fits MB 660 and PXC 550 wireless headsets
  • Slim 45.44 × 33.84 × 4.30 mm profile slides in easily
  • Brand-new Cameron Sino unit with 100 % OEM compatibility

Replacement battery for Sennheiser MB 660

This 3.7 V Li-Polymer cell delivers 650 mAh and 2.41 Wh in a compact 45.44 x 33.84 x 4.30 mm black package. It matches the original AHB413645PCT part number for direct compatibility with the listed headsets. The unit ships new and ready to install.

Steady output through a full listening session

The chemistry maintains a stable voltage curve so audio quality does not dip as the charge declines. Capacity is rated for typical wireless headset duty cycles rather than short bursts. Users can expect consistent playback time across the discharge range.

Cool, silent operation with minimal draw

Li-Polymer construction generates negligible heat during normal charge and discharge. No moving parts mean zero acoustic noise. The 2.41 Wh rating keeps power consumption low, preserving the headset's own battery management logic.

Highlights

  • Replaces the original Sennheiser AHB413645PCT battery
  • 7 V 650 mAh Li-Polymer cell delivers 2.41 Wh
  • Fits MB 660 and PXC 550 wireless headsets
  • Slim 45.44 × 33.84 × 4.30 mm profile slides in easily
  • Brand-new Cameron Sino unit with 100 % OEM compatibility

Specifications

BrandCameron Sino
ModelDS-CS-SXC550SL

Questions about this item

Does the 3.7 V 650 mAh Li-Polymer cell run warm during long listening sessions?

The cell is rated at 2.41 Wh and fits the original 45.44 x 33.84 x 4.30 mm cavity, so heat output matches the factory design.

Which Sennheiser headsets accept the DS-CS-SXC550SL battery?

It replaces the AHB413645PCT pack in the MB 660 and PXC 550 wireless models.

Will the 45.44 x 33.84 mm footprint align with the existing battery connector on my headset?

Yes, the dimensions and 3.7 V pin-out are 100 % OEM compatible for a direct swap.

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