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

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.