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Small black rectangular lithium-polymer battery pack with two wire leads

Cameron & Co

Cameron & Co DS-CS-SHD440SL Li-Polymer Battery 3.7V .6Ah Black

SKU CH-B4EF-2ED97

Replacement lithium-polymer battery rated 3.7 V .6 Ah for Sennheiser HD 4.40 BT, HD 4.50BTNC, Momentum 2.0, Momentum 3.0 and Urbanite XL headphones

  • Product typeBluetooth Headset
  • Direct replacement for Sennheiser headphones
  • 7 V .6 Ah Li-Polymer chemistry
  • Fits HD 4.40 BT and HD 4.50BTNC models
  • Compatible with Momentum 2.0 and 3.0 series
  • Slim 42.40 x 24.50 x 5.80 mm profile

Replacement Battery for Sennheiser Headphones

This lithium-polymer cell is built for the Sennheiser HD 4.40 BT, HD 4.50BTNC, Momentum 2.0, Momentum 3.0 and Urbanite XL models. It replaces the original AHB622540N1 and CP-SN40 packs with a direct-fit design. The unit ships new and ready to install. It restores wireless listening without soldering or adapters.

Thermal Behaviour and Power Draw

The 3.7 V chemistry delivers 600 mAh and 2.22 Wh in normal operation. Li-polymer construction keeps internal resistance low so the pack stays cool during music playback and calls. Self-discharge is minimal when the headphones are stored between charges. No active cooling or external power is required.

Fit and Integration

The cell measures 42.40 x 24.50 x 5.80 mm and slides into the existing battery compartment of each compatible model. Black housing matches the original aesthetic. The replacement frees the headset from a tethered charger and returns full portable use. Buyers who need a higher capacity pack or a different voltage will need another solution.

How it compares

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

Price $13.99
Cheaper than about 80% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-SHD440SL
Product typeBluetooth Headset

Questions about this item

How do I install the DS-CS-SHD440SL battery in my Sennheiser headphones and which step causes the most trouble?

Open the earcup, disconnect the old pack, connect the new 3.7 V 600 mAh Li-Polymer cell matching the original AHB622540N1 wiring, then reassemble; the step most people get wrong is reversing the polarity connector.

What maintenance or replacement will this 0.6 Ah battery need over time?

The Li-Polymer pack has no user-serviceable parts; when run-time falls noticeably below the rated 2.22 Wh you simply replace the whole battery again.

What limit appears first during long listening sessions with this 42.40 × 24.50 × 5.80 mm cell?

The 600 mAh capacity sets the runtime ceiling; under continuous Bluetooth use the headphones will shut down once the 3.7 V pack is depleted.

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