Limited to stock on hand, we are no longer going to stock this item.

Replaces Sennheiser battery: BA90

Use with Sennheiser models:
H200
HDE1030
HDI452-P
HDI91
HDI92-P
IS450
RI100
RI100-J
SET100
SET100-J

This is a 3rd party replacement to the original battery.

2 year manufacturer's warranty.
Physical Specifications
Weight: 0.15 lbs
Battery Specifications
Capacity 80.0
Capacity Units mAh
Chemistry NiMH
Electrical Specifications
Voltage 2.40
Product Information
Item Dimension Units Inches
Item Height .47
Item Length 1.3
Item Width .70

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Sennheiser BA90 Headset Battery 2.4v 80mah NiMH, CPH-521

  • Model: CPH-521
  • UPC: 009322521316
  • Availability: 3
  • $8.34
  • $7.50



California Proposition 65

Warning: This product may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. Visit p65warnings.ca.gov for more information.