Battery health reduced after iOS Update

Hi bro. Before 17.3 update my battery health was 100 after update it reduced to 98 .Is it okay to get battery health reduced by 2 percentage .My device is 14 pro max 4 months old

hello bro, for 4 months usage 2% reduce is totally normal. continue following the suggested charging practice and it will be maintained well.

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But a sudden drop from 100 to 98 at a time is normal ah bro?

Yes bro. Just a refresh as its measured at software level for chemically ageing battery. Calculated using cycle count normally.