3.7V Battery Replacement for Plantronics Backbeat Go 2 Earphone Headset Li Ion Lithium Rechargeable Accumulator+Track Code|Digital Batteries| - AliExpress
Battery for Plantronics Voyager 8200 Headset New Li Polymer Rechargeable Accumulator Pack Replacement 203035 01 3.7V 700mAh|Digital Batteries| - AliExpress