Batteri der passer til Fitbit Charge 3 - 70 mAh 3.85 V batteri (Sort) - BatteryUpgrade
Amazon.com: Fitbit Versa 3 Health & Fitness Smartwatch with GPS, 24/7 Heart Rate, Alexa Built-in, 6+ Days Battery, Black/Black, One Size (S & L Bands Included) : Sports & Outdoors
Can We Replace Versa's Battery? - Fitbit Community
Amazon.com: Replacement Battery for Fitbit Charge 3,FB409,fits LSS271621,70mAh/0.27Wh : Electronics