Cisco 8821 Battery, Extended

The Cisco CP-BATT-8821= is a Lithium-ion rechargeable battery for the Cisco 8821 Wireless IP Phone. This 4.35V, 2060mAh battery has a talk time of up to 13 hours and a standby time of 240 hours. The battery can be quickly charged in 3 hours using a separate Cisco power adapter, desktop charger, or multicharger. The battery can be charged in 6 hours using a USB cable.