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Small rectangular lithium battery with gold contacts and green circuit board

MPF Products

MPF Products BAP 800 350mAh replacement battery

SKU CH-GJVJ-8DE36

350 mAh replacement battery for Sennheiser Flex 5000, RS 5000 and Set 880 wireless headphones

  • Product typeAccessories
  • 350 mAh capacity powers longer listening sessions
  • Direct replacement for Sennheiser BAP 800 and AHB571935PCT-03
  • Fits Flex 5000, RS 5000 and Set 880 models
  • New condition ensures full rated performance from first use
  • Ready-to-install accessory restores wireless headphone operation

Compatible Sennheiser models

This replacement battery fits the Sennheiser Flex 5000, RS 5000 and Set 880 digital wireless headphones. It replaces the original BAP 800 cell and the AHB571935PCT-03 part number. Owners of those headsets can restore full portable operation with a direct-fit unit.

Build and daily handling

The cell is supplied new and matches the physical profile required by the listed headphones. No soldering or adapter wiring is needed; the battery slots into the existing compartment and connects with the factory contacts. Routine charging cycles proceed exactly as they did with the original pack.

When the swap makes sense

The upgrade is worthwhile when the original pack no longer holds a useful charge or when runtime has dropped below practical listening sessions. It is not intended for headphones outside the three named models or for users who need a higher capacity than the rated 350mAh.

How it compares

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

Price $4.99
Cheaper than about 98% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameMPF Products
Product lineIntended for/Compatible with the Following Sennheiser Headphones/Headset Models: Flex 5000, RS 5000, Set 880.
Model nameReplacement for the Following Battery Sennheiser Model/Part Numbers: AHB571935PCT-03, BAP 800.
Part numberReplacement Battery
Product typeAccessories

Questions about this item

What connector does the BAP 800 battery use and what voltage does it supply?

The BAP 800 is a direct replacement for the Sennheiser AHB571935PCT-03 cell and uses the original headset connector, supplying the factory voltage for the Flex 5000, RS 5000 and Set 880 models.

What physical dimensions must the battery compartment accept for this BAP 800 cell?

The BAP 800 matches the exact form factor of the original Sennheiser AHB571935PCT-03 pack, so it fits the existing battery bay in the Flex 5000, RS 5000 and Set 880 headphones without modification.

How is the BAP 800 installed and which step do people often miss?

Open the battery compartment, disconnect the old pack, connect the BAP 800 using the same plug orientation, then close the cover; the step most often missed is aligning the connector keying before pressing it fully home.

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