vi mando una foto del quadrante apple watch durante la ricarica
[Edited by Moderator]
Question marked as
This looks like you have Optimised Charging and/or Charge Limit enabled.
You can disable the Charging Limit in the settings for Battery on your watch, so that it will charge up to 100% again.
Have a look at the related article:
About Optimized Battery Charging on your Apple Watch - Apple Support
Informazioni sulla funzione Caricamento ottimizzato di Apple Watch - Supporto Apple (IT)