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Small rectangular lithium-polymer battery with wire connector, 3.7V 140mAh

Ultralast BATT-CS540 3.7V 140mAh Li-Poly battery for Plantronics CS540

SKU CH-5DBB-NJYCP

A 3.7V 140mAh Li-Poly rechargeable battery compatible with Plantronics CS540 headsets

  • Fits Plantronics CS540 headsets for direct replacement
  • 7V 140mAh Li-Poly chemistry delivers reliable talk time
  • Rechargeable design supports repeated charge cycles
  • Meets or exceeds original manufacturer specifications
  • Compatible with CS540, CS540A, Savi CS540 and Savi CS540A models

Ultralast BATT-CS540 Replacement Battery

The Ultralast BATT-CS540 is a 3.7V 140mAh lithium-polymer rechargeable battery built for Plantronics CS540 and CS540A headsets. It also fits Savi CS540, Savi CS540A, and models 84479-01 and 86180-01. It meets or exceeds the original manufacturer specifications for reliable talk time.

Installation And Common Issues

Replacing the cell requires opening the headset housing and disconnecting the old pack, so basic soldering or connector skills are helpful. The tight internal space can make wire routing difficult, and forcing the cover shut may pinch cables or damage the new battery.

Capacity And Chemistry Limits

The 140mAh lithium-polymer cell provides a finite talk and standby window before recharging is needed. Like all Li-Poly packs, capacity will gradually decline over repeated charge cycles. It is not suitable for devices requiring higher voltage or larger capacity packs.

Highlights

  • Fits Plantronics CS540 headsets for direct replacement
  • 7V 140mAh Li-Poly chemistry delivers reliable talk time
  • Rechargeable design supports repeated charge cycles
  • Meets or exceeds original manufacturer specifications
  • Compatible with CS540, CS540A, Savi CS540 and Savi CS540A models

Specifications

No published specifications for this item yet.

Questions about this item

How do I confirm the 3.7V 140mAh battery is working after installing it in my CS540 headset?

Charge the pack fully, then place a call and verify talk time matches the headset's normal rating; the headset battery indicator should show a full charge and hold it through a typical shift.

What comes in the box and do I need any extra parts to fit the Ultralast BATT-CS540?

The package contains one 3.7V 140mAh Li-Poly cell; no tools, cables or adapters are included or required — it slots directly into the CS540, CS540A, Savi CS540 or Savi CS540A battery compartment.

Which version should I choose for a Plantronics 86180-01 headset?

This single 140mAh 3.7V Li-Poly version replaces the original 86180-01 and 84479-01 packs and is also comparable to Lenmar LENCBZ625PC and Interstate TEL0091, so no capacity choice is needed.

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