Battery for PLANTRONICS Voyager Legend,5200 Headest 3.7V Li po Polymer Rechargeable Accumulator Replacement AHB480832PK+Track|Replacement Batteries| - AliExpress
Battery for PLANTRONICS Voyager Legend,5200 Headest New Li po Rechargeable Accumulator Replacement Pack AHB480832PK 3.7V 80mAh|Digital Batteries| - AliExpress
3.7V 100mAh Replacement Battery for Plantronics Voyager Legend Wireless Bluetooth Headset - Walmart.com