We are sad to announce that after 26 years, ZBattery.com will be closing.

After 26 years, we sadly announce that zBattery will be closing its doors.

It has been a pleasure working with all of our customers over many seasons of change in battery technology.
Starting August 1, 2025, we will begin the process of eliminating our remaining inventory.
All sales will be final- no returns will be accepted. Our website will remain up for 24-hour ordering.
Our lobby hours at the Hilltop Road location will be Monday-Friday from Noon-5PM ET,
and we will continue to have phone support during those hours as well.
We will not be ordering in new product, so all sales will be limited to what stock we have on hand.
We thank you again for you many years of support.

-zBattery Staff

Product Catalog
zbattery.com/batteries/headset/Sennheiser-BA90-Headset-Battery-2-4v-80mah-NiMH

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

Model: CPH-521

Price

$8.34

$7.50

Details

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

Description

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

Qty

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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.

Tags:

ba90, h200, hde1030, hdi452-p, hdi191, hdi92-p, is450, ri100, ri100-j, set100, set100-j, sennheiser headset