Hi sir... i have an chrgng issue its been chrgng frm 1-82 its beeen struck on 82.. what can i do plz help

If you're running iOS 11.3, you can check your battery status going to Settings>Battery>Battery status (Beta) and tap on it. If the maximum capacity shows less then 85% your battery could need to be replaced.

If you don't have iOS 11.3, have your device / battery checked at your most convenient Apple Store or Authorized Service Provider: Apple - Find Locations - Location Selector

Regards

Giulio