Last 15 day my battery % have decrease from 100 to 93 device purchased January 2024 I don’t know what’s the problem
hi bro, calculating from january for 9 months 7% reduce is normal. continue with the charging practice and that will help to maintain. dont worry.
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Bro but sudden drop from 100 to 93 in sep 1 week it was in 100 % but today it was 93
Sorry asking again small clarification and thanks for replying 
Yes bro. Its a refresh of battery health that happens sometimes when we update software or restart iPhone. till then due to bugs battery health may stay at certain percentage for few months.
Thats why we notice the difference. automatically it adjusts and we get 2.5 years for average users to reach that 80% limit bro.