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ArtisanPower 2000mAh replacement battery for Cisco 8821 phones, 3.7V 7.4Wh

ArtisanPower

ArtisanPower Replacement Battery for Cisco 8821 & 8821-EX 2000mAh

SKU CH-QS43-E208G

Replacement battery for Cisco 8821 and 8821-EX phones with 2000 mAh capacity and 3.7 Volt rating

  • TypeCordless IP Phone
  • Dimensions42 x 101 x 5
  • Weight0.09
  • Replaces OEM CP-BATT-8821 for direct compatibility
  • 2000 mAh capacity supports extended talk time
  • 7 Volt and 7.4 Wh rating matches original specs
  • Slim 42 x 101 x 5 mm profile fits handset battery bay
  • Lightweight 0.09 design adds minimal bulk

Replacement Battery for Cisco 8821

This ArtisanPower replacement battery fits Cisco 8821 and 8821-EX cordless IP phones. It replaces the original OEM CP-BATT-8821 unit. The pack is designed for voice-over-IP handsets that need a direct swap without modification.

3.7 Volt 7.4 Wh Lithium-Ion Pack

The cell delivers 3.7 volts with a 7.4 watt-hour rating and 2000 mAh capacity. Normal talk and standby cycles draw modest current, so the pack runs cool and silent. No active cooling or fan noise is involved in daily operation.

Compact 42 x 101 x 5 mm Form Factor

At 42 by 101 by 5 millimetres and 0.09 kilograms, the battery slides into the handset cavity without forcing the chassis. It frees the user from tethered power while keeping the phone’s original balance and belt-clip clearance.

Highlights

  • Replaces OEM CP-BATT-8821 for direct compatibility
  • 2000 mAh capacity supports extended talk time
  • 7 Volt and 7.4 Wh rating matches original specs
  • Slim 42 x 101 x 5 mm profile fits handset battery bay
  • Lightweight 0.09 design adds minimal bulk

Specifications

BrandArtisan Power
Model8821, 8821-EX
TypeCordless IP Phone
Dimensions42 x 101 x 5
Weight0.09

Questions about this item

How do I install the ArtisanPower battery in my Cisco 8821 phone and what step is often missed?

Remove the back cover, insert the 42 x 101 x 5 mm pack with the contacts facing the phone, then snap the cover until it clicks; the step often missed is aligning the narrow 5 mm edge so the latch engages fully.

What maintenance will this 2000 mAh pack need later?

No routine maintenance is required; when talk time shortens noticeably, replace the entire pack — the 3.7 V lithium-ion cell is not user-serviceable.

What limit appears first during a long shift on the 8821-EX?

The 7.4 Wh capacity sets the runtime ceiling; under continuous talk the 2000 mAh rating will be reached before any thermal or voltage limit.

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