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Small rectangular black lithium-polymer battery pack measuring 21.90 by 11.76 by 4.44 mm

Centenex Electronics

Centenex Electronics DS-CS-BST100SL Battery for Beats CPP-566 Powerbeats 2 Li-Polymer 90mAh 3.7V Black

SKU CH-50RT-R6KEP

Lithium-polymer replacement cell restores Powerbeats 2 wireless headsets with 90 mAh capacity and 3.7 V output

  • Product typeHeadPhone Battery
  • Compatible replacement for Powerbeats 2 CPP-566
  • Li-Polymer chemistry delivers 90 mAh capacity
  • 7 V output matches original specification
  • Compact 21.90 x 11.76 x 4.44 mm form fits earbud housing
  • Brand-new 100 % OEM-compatible unit ready to install

Replacement battery for Powerbeats 2

This 90 mAh lithium-polymer cell matches the CPP-566 part used in Beats Powerbeats 2 headsets. It delivers 3.7 V and 0.33 Wh in a 21.90 × 11.76 × 4.44 mm black pack. The component is new and 100 % OEM compatible. It suits owners whose original pack no longer holds a useful charge.

Sustained discharge behaviour

The 0.09 Ah rating reflects capacity under a moderate, continuous load rather than a brief pulse. Internal resistance stays low enough for steady Bluetooth audio streaming without sudden voltage sag. Heat build-up remains minimal during hour-long sessions. Degradation follows typical Li-Polymer calendar ageing rather than cycle-count limits.

Practical limits of the cell

Capacity fixes maximum listening time between charges regardless of volume level. The 3.7 V nominal voltage cannot be increased to extend runtime. Physical dimensions prevent using any higher-capacity alternative. Users needing longer daily use must recharge more frequently or carry a spare pack.

How it compares

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

Price $11.99
Cheaper than about 90% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameCentenex Electronics
Model nameDS-CS-BST100SL
Product typeHeadPhone Battery

Questions about this item

How much heat or power draw should I expect from the 3.7 V 90 mAh Li-Polymer cell during all-day use?

The 0.33 Wh cell draws very little current; heat is negligible and it will not warm the earbud housing during continuous playback.

What tools or parts must I already have to replace the CPP-566 battery in my Powerbeats 2?

You need a small Phillips screwdriver, a plastic pry tool, and a soldering iron with fine tip to detach the old cell and attach the new one.

Will the 21.90 x 11.76 x 4.44 mm dimensions fit the original Powerbeats 2 compartment without modification?

Yes, the replacement matches the factory CPP-566 footprint exactly, so it seats in the existing cavity with no trimming required.

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