Cisco 8821 & 8821-EX Phone. Replacement Battery. 2100 mAh

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$49.00 $44.00
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Size Chart


Device Model:
8821, 8821-EX
OEM Part Number:
AP Capacity:
2000 mAh
AP Capacity Gain:
Lithium Ion
Watt Hour Rating:
1.4 oz (40 g)
1.6 x 4.0 x 0.2 in (42 x 101 x 5 mm)

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Artisan Power battery replacement replaces battery number: CP-BATT-8821 for your Cisco 8821 Unified Color Wireless VOIP Phone and Cisco 8821-EX phone. Product arrives quickly in expert packaging to help you get your phone up and running right out of the box.
Package Dimensions 4.72 x 2.48 x 0.31 inches
1.44 ounces

2100 mAh Capacity Rating
3.8 Voltage
Lithium Ion Battery Cell Composition
Maximum Battery Run Time
Seamless Integration with Cisco 8821 and 8821-EX.
Highest Standards Construction & Safety Certifications
Premium Quality
UL Listed for UL 2054 Lithium Ion Batteries
UN 38.3 Certified
Installs in Seconds
You’ll love the extended capacity 2100 mAh which allows for increased phone talk time, standby time and reliability per charge compared to the original OEM Cisco CP-BATT-8821. Pair your new battery replacement with our other premium 8821 compatible products like cases, chargers and more.
Dead, dying or lost batteries don’t have to mean the end of your valuable Cisco phone. Now, simply replace them with brand new higher capacity aftermarket batteries that can equal or outperform OEM batteries. Stop throwing out electronics and equipment just because your batteries are dead. Look through Artisan Power’s entire line of replacement batteries for your needs.
We offer premium quality battery replacements that equal or exceed OEM standards and specifications. Quickly and conveniently replace your electronic batteries with our aftermarket lithium ion replacements and get back to using your equipment at their full potential.

Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.