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Rectangular lithium-ion cell phone battery, matte finish, Cisco IP Phone 8821 compatible

Battery Technology Inc.

Battery Technology Inc. CP-BATT-8821 3.8V 2000mAh 7.6Wh cell phone battery

SKU CH-PN9K-EDYVK

A 3.8 V lithium-ion cell delivering 2000 mAh and 7.6 Wh for Cisco 8821 IP phones

  • Reliable power for Cisco 8821 IP phones
  • 8V lithium-ion chemistry delivers stable voltage
  • 2000mAh capacity supports extended talk time
  • 6Wh energy rating meets OEM specifications
  • Direct replacement for GP-S10-374192-010H and 35-100138-03

Replacement battery for Cisco 8821 IP phones

This lithium-ion cell delivers 3.8 volts and 2000 milliampere-hours for a total of 7.6 watt-hours. It is built as a direct replacement for the original power pack used in Cisco 8821 wireless handsets.

Suitable for IT teams maintaining Cisco 8821 fleets

Organisations running other handset models or needing higher capacity than 2000 milliampere-hours should source a different pack. The cell is not intended for smartphones, tablets or generic USB devices.

Rated at 7.6 watt-hours for standard shift use

The 2000 milliampere-hour capacity supports typical talk and standby cycles on an 8821 handset. Environments demanding continuous heavy usage or multi-shift coverage without recharging will exceed the available headroom.

How it compares

Measured against everything we stock in Replacement Phone Batteries, at today’s prices. Recalculated every night.

Price $52.99
Pricier than about 92% of the 868 comparable items (median $14.99).

Specifications

Product
Brand nameBattery Technology Inc.

Questions about this item

Will the CP-BATT-8821 power my Cisco 8821 IP Phone without any other parts?

Yes, the CP-BATT-8821 is a direct replacement battery for the Cisco 8821 IP Phone. It fits inside the handset and supplies 3.8 V and 2000 mAh, so no extra components are required.

Can I keep using my existing Cisco 8821 charger with this 7.6 Wh battery?

The CP-BATT-8821 matches the original 3.8 V specification, so the standard Cisco 8821 charger will charge it normally. No change to your charging routine is needed.

How can I confirm the CP-BATT-8821 is working correctly after I install it?

After inserting the battery, the Cisco 8821 handset should power on, show a full charge indicator, and sustain talk time consistent with a 2000 mAh cell.

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