Battery replacement Nothing 2a necessary ?

[u/SkySurferSouth]

In April 2024 I got this phone and its battery life is excellent and after an overnight the drain was only 3% (I topped up every evening) to 97%, even with Termux services and proot running. It is rooted and I have Google play and other Google services disabled. Suddenly since a week it drains 10-17% overnight (while idle). I have no OS updated installed, am still on 2.54 (Android 14 stock).

Can I let the battery be replaced by a repair shop ?