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Rectangular black lithium-ion battery, 44.73 by 37.40 by 6.85 mm, 1050 mAh capacity

Centenex Electronics

Centenex Electronics DS-CS-SRH200SL Battery for Sony SP73 1050mAh

SKU CH-BHJP-NTERR

Replacement lithium-ion battery delivering 1050 mAh at 3.7 V for compatible Sony headphones

  • TypeBluetooth Headset
  • Compatible with Sony MDR-1000X, MDR-1ABT, SRS-BTS50, WH-1000XM2
  • 1050 mAh lithium-ion cell restores original run time
  • Replaces Sony part numbers SP73, SP-73, 4-296-914-01
  • Compact 44.73 × 37.40 × 6.85 mm profile fits factory battery bay
  • Brand-new, 100 % OEM-compatible unit ready to install

Purpose-built replacement

This Centenex Electronics DS-CS-SRH200SL cell replaces the Sony SP73 pack inside MDR-1000X, MDR-1ABT, SRS-BTS50 and WH-1000XM2 headphones. It is a 3.7 V, 1050 mAh lithium-ion unit measuring 44.73 x 37.40 x 6.85 mm and finished in black. Buyers who need a higher-capacity cell or a different form factor cannot use this battery.

Sustained discharge

The 3.89 Wh rating supports typical wireless-listening sessions without the voltage sag seen in aged original packs. Internal resistance stays low over repeated charge cycles, so playback time remains consistent. The pack is not designed for high-drain applications beyond headphone use.

Drop-in installation

The battery ships new and matches the SP73 footprint, so no soldering or case modification is required. The only common issue is forgetting to reconnect the flex cable before sealing the earcup, which leaves the headset dead on first power-up.

Highlights

  • Compatible with Sony MDR-1000X, MDR-1ABT, SRS-BTS50, WH-1000XM2
  • 1050 mAh lithium-ion cell restores original run time
  • Replaces Sony part numbers SP73, SP-73, 4-296-914-01
  • Compact 44.73 × 37.40 × 6.85 mm profile fits factory battery bay
  • Brand-new, 100 % OEM-compatible unit ready to install

Specifications

BrandCentenex Electronics
ModelDS-CS-SRH200SL
TypeBluetooth Headset

Questions about this item

How much heat does the 3.7 V 1050 mAh cell produce during a full day of playback?

The lithium-ion pack is rated at 3.89 Wh; normal operation stays warm to the touch but does not become hot under typical listening volumes.

Which tools or adhesive strips are required to swap the battery inside my MDR-1000X?

A small Phillips screwdriver, a plastic opening tool and the pre-cut adhesive strips included with the replacement cell are all that is needed.

Will the 44.73 mm × 37.40 mm × 6.85 mm pack fit the older MDR-1ABT without modifying the housing?

Yes, the dimensions match the original SP73 cell used in the MDR-1ABT, so the battery compartment closes normally.

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