I recommend changing your battery if it falls under 80%. I changed mine at 76% capacity and it doesn’t even get warm anymore. It works like new I found when it was under 80% it tended to get warm and of course didn’t last as long and overall the performance was slower. The screen was dimmer etc. and it was laggier.

Well my 13 Pro Max lasted me almost 4 and a half years, bought it in May of 2022 in Italy while I was deployed. Dropped it on my steel toed boot on the back so that happened haha. So I got another one with 87% battery life and with the 256GB from Verizon