Cisco 8821 Battery Features
- 13 hours of voice calling; up to 240 hours standby
- Rechargeable Lithium ion 4.35V, 2060mAh smart battery
- Note: Actual battery life varies significantly based on environmental factors, scan mode, and Bluetooth use.
Compatibility
- Compatible with Cisco 8821 Wireless IP Phone
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Yealink MP54 Microsoft Teams Edition Android 9-based IP Phone (MP54-TEAMS) New 


