Amazon.com: WINDCAMP ft 817 3000mah Polymer Lithium Battery Charger Battery Cover w/Stand for Yaesu Ft-817 Gold : Electronics
Charger Adapter Built in lithium battery Conversion external charging adapter board for LIPO YAESU FT 817 FT 818 HAM WLB 817S|Battery Accessories| - AliExpress
Windcamp LiPo Battery
Yaesu FT-817
Yaesu FT-817 FT-817ND Replacement Battery: BatteryClerk.com Two Way Radio