A:
If the unit is kept without any use from 3 to 6 months it may damage the battery. That is why to maximize battery performance, the battery should be charged and discharged once every six months. For detailed information on how this unit works: https://goo.gl/TVjNqD
Please don't hesitate to contact our Customer Care Team at: https://www.plantronics.com/us/en/support/contact if you require any further assistance.