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Small rectangular black Li-Polymer battery pack, 52.30 by 33.53 by 3.90 mm

Centenex Electronics

Centenex Electronics DS-CS-PLK100SL Battery for Plantronics PR-423350 K100 Sony MDR-XB950BT DS6500

SKU CH-P545-N8A04

Replacement lithium-polymer battery delivering 3.7 V and 650 mAh for Plantronics K100 and Sony MDR-XB950BT headsets

  • Product typeBluetooth Headset
  • Li-Polymer chemistry keeps the headset light
  • 7 V 650 mAh capacity powers long calls
  • Fits Plantronics K100 and Sony MDR-XB950BT
  • Replaces PR-423350 and Sony 1-756-920-21
  • Slim 52.30 x 33.53 x 3.90 mm profile

Direct replacement battery

The Centenex Electronics DS-CS-PLK100SL is a lithium-polymer cell built to replace the original power pack in specific wireless headsets. It fits Plantronics K100 units and Sony MDR-XB950BT and MDR-DS6500 models. The 3.7 V 650 mAh capacity matches the factory specification of 2.41 Wh. Buyers whose headsets no longer hold a charge can restore full runtime with this single black cell.

Fits existing battery bay

The pack measures 52.30 by 33.53 by 3.90 mm and slides into the original compartment without modification. No soldering or adapter cables are required because the connector matches the OEM layout. It draws power from the headset's own charging circuit, so no external charger or extra wiring is needed. The battery simply replaces the depleted unit and lets the headset charge normally again.

Restores lost runtime

This cell replaces a battery that has degraded below useful capacity, returning the headset to its original playtime. It is not a higher-capacity upgrade and will not extend listening time beyond the factory rating. Owners of other headset models or those needing longer runtime than the stock 650 mAh provides should look elsewhere. The jump is worth it only when the original pack no longer holds a usable charge.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 85% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameCentenex Electronics
Model nameDS-CS-PLK100SL
Product typeBluetooth Headset

Questions about this item

How long does the 650 mAh Li-Polymer cell last under continuous headset use?

The 3.7 V 650 mAh pack stores 2.41 Wh, giving typical talk or music time before a recharge is needed.

Does the battery run hot or make noise during all-day operation?

Li-Polymer chemistry produces minimal heat and no audible noise while powering the headset.

Which headset models accept the 52.30 x 33.53 x 3.90 mm form factor?

It fits Plantronics K100 and Sony MDR-DS6500, MDR-XB950BT using part numbers PR-423350, 1-756-920-21, 1-756-920-31, LIS1427HEPCC, LIS1427NHPCC.

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