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Rectangular black lithium-polymer battery with two wires, 52 by 34 by 3 mm

Cameron & Co

Cameron & Co DS-CS-SXB650SL HeadPhone Battery 3.7V 550mAh 2.04Wh Li-Polymer Black

SKU CH-REX9-2Y09Q

Replacement lithium-polymer battery for Sony MDR-XB650BT, MDR-XB950B1 and MDR-XB950BT headsets, 3.7 V 550 mAh 2.04 Wh

  • TypeHeadPhone Battery
  • Replaces Sony 1-756-920-31 and 1-756-920-32 batteries
  • 550 mAh capacity restores original run-time for MDR-XB650BT headphones
  • 7 V 2.04 Wh lithium-polymer cell matches factory voltage and energy
  • Slim 52.35 × 34.10 × 3.20 mm form fits inside XB950B1 and XB950BT models
  • Brand-new 100 % OEM-compatible unit supplied in black finish

Replacement Battery for Sony Headsets

This lithium-polymer cell replaces the original Sony 1-756-920-31 and LIS1427HEPCC packs used in the MDR-XB650BT, MDR-XB950B1 and MDR-XB950BT wireless headphones. It delivers the same 3.7 V nominal voltage and 550 mAh capacity in a 52.35 x 34.10 x 3.20 mm black housing. The unit is new and built to match the factory specifications for direct installation.

Thermals Noise and Power Draw

As a passive battery pack it produces no audible noise and generates no measurable heat during normal discharge. The cell supplies 2.04 Wh of energy at a steady 3.7 V output, drawing only the current required by the headphone circuitry. No active cooling or external power management is involved in its operation.

Capacity and Compatibility

The decisive specification is the 550 mAh capacity at 3.7 V, which must match the original pack for correct runtime and charging behaviour. Buyers whose headsets require a different voltage, a higher milliampere-hour rating or a different physical footprint will find this unit unsuitable.

Highlights

  • Replaces Sony 1-756-920-31 and 1-756-920-32 batteries
  • 550 mAh capacity restores original run-time for MDR-XB650BT headphones
  • 7 V 2.04 Wh lithium-polymer cell matches factory voltage and energy
  • Slim 52.35 × 34.10 × 3.20 mm form fits inside XB950B1 and XB950BT models
  • Brand-new 100 % OEM-compatible unit supplied in black finish

Specifications

BrandCameron Sino
ModelDS-CS-SXB650SL
TypeHeadPhone Battery

Questions about this item

How do I fit the 52.35 x 34.10 x 3.20 mm pack into my MDR-XB650BT, and what step is often missed?

Remove the ear-cup padding, unplug the old 3.7 V 550 mAh cell, connect the new plug the same way round, then reseat the padding so the battery sits flat.

What maintenance will the 2.04 Wh Li-Polymer cell need over time?

No routine maintenance is required; when run-time drops noticeably after many charge cycles, replace the pack with another 3.7 V 550 mAh unit.

What limit appears first during long listening sessions with the 550 mAh battery?

The 2.04 Wh capacity sets the maximum continuous play time; once depleted you must recharge before further use.

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