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Square rechargeable battery pack, black finish, gold contacts visible, 40.5 by 40 by 6 millimetres

Cameron Sino Battery for Bang & Olufsen Beoplay H8i, H9 3rd Gen AEC723938 1000mAh

SKU CH-8AD8-PN8DF

Replacement battery for Bang & Olufsen Beoplay H8i and H9 3rd Generation headphones, 1000 mAh capacity with integrated protection circuit

  • Battery pack size40.5 × 40 × 6 mm
  • Battery capacity1,000 mAh
  • Details40.5 × 40 × 6 mm
  • Replacement battery for Beoplay H8i and H9 3rd Gen
  • 1000 mAh capacity matches original specification
  • 7 V lithium-polymer cell with built-in protection circuits
  • Compact 40.50 × 40.00 × 6.00 mm form factor fits exactly
  • Manufactured under ISO 9001 with CE and RoHS certification

Compatible Replacement Battery

This Cameron Sino battery replaces the original power cell in Bang & Olufsen Beoplay H8i and Beoplay H9 3rd Generation headphones. It matches the AEC723938 part number and delivers 1000mAh capacity at 3.7V. The pack measures 40.50 x 40.00 x 6.00mm and includes a fully decoded chip for proper communication with the device. ISO9001, RoHS and CE certifications are noted by the manufacturer.

Upgrade From Degraded Original Cell

The unit is intended for owners whose factory battery no longer holds a useful charge after repeated cycles. A fresh 1000mAh / 3.70Wh cell restores the original runtime without requiring a higher-capacity alternative. Installation videos are widely available and the connector aligns with the existing socket. The jump is worth it when the headphones still function well but battery life has become the limiting factor.

Practical Limits Of The Lithium-Ion Pack

The chemistry operates safely within the stated voltage and capacity envelope; exceeding 60°C or 140°F during storage is cautioned against by the supplier. Overcharge, over-discharge, over-voltage and short-circuit protections are built into the pack circuitry. A new cell reaches peak performance after two or three full charge and discharge cycles. Using a low-quality charger can reduce overall service life.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $12.99
Pricier than about 60% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameCameron Sino
Model nameBeoplay H8i, Beoplay H9 3rd Generation
Part numberAEC723938
Power
Battery capacity1,000 mAh
In the box
Battery pack size40.5 × 40 × 6 mm

Questions about this item

Will the 40.50 x 40.00 x 6.00 mm battery pack fit inside my Beoplay H8i or H9 3rd Generation headphones?

Yes, the replacement cell matches the original AEC723938 dimensions of 40.50 x 40.00 x 6.00 mm, so it seats correctly in the ear-cup compartment designed for that part number.

What is the critical step during installation that users often miss when connecting the new battery?

The connector must be fully seated and properly aligned with the device socket; a loose or offset connection will prevent the headphones from powering on.

After how many full charge and discharge cycles will the 1000 mAh cell reach its best performance?

The battery delivers optimal capacity after 2 or 3 complete charge and discharge cycles.

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