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Small rectangular black lithium-polymer battery 29.80 by 23.10 by 7.00 mm

Cameron & Co

Cameron & Co DS-CS-SWH104SL Battery 3.85v 500mAh 1.93Wh Black

SKU CH-4BAA-CRZK4

Replacement Li-Polymer cell for the Sony WF-1000XM4 charging case, rated at 3.85 V, 500 mAh and 1.93 Wh

  • TypeBluetooth Headset
  • Replaces the original Sony WF-1000XM4 case battery using part number LP702428
  • Delivers 3.85 V and 500 mAh capacity for reliable charging cycles
  • Stores 1.93 Wh of energy in a compact lithium-polymer cell
  • Fits the charging case precisely at 29.80 x 23.10 x 7.00 mm
  • Supplied brand new with 100 % OEM compatibility for immediate use

Replacement battery for Sony WF-1000XM4 case

This Li-Polymer cell replaces the original LP702428 pack inside the WF-1000XM4 charging case. It delivers 3.85 V and 500 mAh for 1.93 Wh of capacity. The part is new and built to OEM compatibility standards. Installing it restores the case’s ability to recharge the earbuds multiple times.

Exact-fit dimensions and connector

The cell measures 29.80 x 23.10 x 7.00 mm, matching the factory cavity so the case lid closes without pressure. Its pre-fitted connector plugs directly onto the case board — no soldering or adapter cables are required. The black wrapper and polarity layout mirror the original design. These details let a careful user swap the cell in minutes.

Voltage and capacity must match

The charging circuit expects a single 3.85 V Li-Polymer cell rated at 500 mAh; using a different voltage or chemistry will prevent charging or damage the electronics. Buyers whose case model is not WF-1000XM4 cannot use this pack. Builders needing a higher-capacity cell for extended runtime will not find it here.

Highlights

  • Replaces the original Sony WF-1000XM4 case battery using part number LP702428
  • Delivers 3.85 V and 500 mAh capacity for reliable charging cycles
  • Stores 1.93 Wh of energy in a compact lithium-polymer cell
  • Fits the charging case precisely at 29.80 x 23.10 x 7.00 mm
  • Supplied brand new with 100 % OEM compatibility for immediate use

Specifications

BrandCameron Sino
ModelDS-CS-SWH104SL
TypeBluetooth Headset

Questions about this item

Will the LP702428 battery need periodic replacement in the WF-1000XM4 charging case?

Yes, the Li-Polymer cell degrades over charge cycles; expect to replace it once runtime drops below your daily needs.

What limits continuous use of the 500mAh pack first?

The 1.93 Wh capacity sets the runtime ceiling; sustained drain empties the cell before any thermal limit is reached.

Does the 3.85V cell generate noticeable heat or noise during all-day charging?

No, the small Li-Polymer pack runs silently and stays cool under normal charge currents.

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