Estry

Battery for Cisco CP-8821-EX-K9-BUN CP-8821-K9-BUN Wireless IP Phone 8821 CP-8821 CP-BATT-8821 GP-S10-374192-010H 74-102376-01

Q: How do I confirm this battery fits my device?

Match your device against the Compatible Model list, or compare the part number printed on your original battery. Still unsure? Email us with your battery details or photos and we will help you confirm.

$22.99 USD

~~$0.00 USD~~ $22.99 USD

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Title 2400mAh 1700mAh

12-Month Warranty30-Day Easy ReturnsShips from US in 48hUN38.3 & ISO9001 Certified

This is a 2400mAh 3.8V Li-Polymer replacement battery for Cisco CP-8821-EX-K9-BUN, CP-8821-K9-BUN and more, compatible with battery part numbers CP-BATT-8821, GP-S10-374192-010H, 74-102376-01.

Battery Specifications

Type:	Li-Polymer
Weight:	75.0g
Dimension:	101.541.84.25mm
Category:	Cordless Phone
Voltage:	3.8V
Rate:	9.12Wh

Compatible Brand

Cisco

Compatible Model

CP-8821-EX-K9-BUN
CP-8821-K9-BUN
Wireless IP Phone 8821
CP-8821

Compatible Battery Part Number

CP-BATT-8821
GP-S10-374192-010H
74-102376-01

⚠ Safety Warnings

Do not disassemble, puncture or modify the battery.
Never short-circuit the terminals or expose to heat / fire.
Do not mix with different batteries or chargers.
Recycle used batteries at designated collection points.

Why Choose Estry

✓ Grade A Cells — Premium cells with stable discharge and low self-discharge.

✓ Real Capacity — Capacity tested to match or exceed the original battery.

✓ Strict QC — Every battery passes charging/discharging and safety checks.

UN38.3 tested for safe transport. MSDS available upon request. Manufactured in an ISO9001 certified facility.

FAQ

How do I confirm this battery fits my device?

Match your device against the Compatible Model list above, or compare the part number printed on your original battery. Still unsure? Email us with your battery details or photos and we will help you confirm.

What is the warranty policy?

This battery is covered by a 12-month warranty against manufacturing defects, plus 30-day easy returns for peace of mind.

How fast will my order arrive?

In-stock orders ship from our US warehouse within 48 hours on business days.