Built-in protection circuit (PCM) prevents over charging/discharging.
266mAh Battery For Fitbit Versa 3 (FB511) & SENSE (FB512) Watch
Battery for Fitbit Versa 4 LSS282024P 3.87V 160mAh
Fitbit Versa / Lite FB504 FB505 Smart Watch Battery WL-FBT1 - 150mAh SP271828SF
Replacement 162mAh Battery For Fitbit Sense 2 Versa 4 FB523 FB521 Smartwatch
Fitbit Charge 2 / 3 FB407 Smart Watch Battery - 3.7V 80mAh LSSP411415 FTC200SL
