Amazon.com: Replacement Battery for PLANTRONICS 66278-01 Savi 730 CS70 Voyager Pro Voyager Pro W730 WH210 Avaya AWH75N AWH75N CS70N CS70-N Voyager Pro HD Voyager Pro UC : Electronics
Plantronics Battery Replacement CT14 (81087-02)
Plantronics Voyager Pro Battery replacement - YouTube