iPhone 17 battery query

[Jessdav96x]

I have had my iPhone 17 for 4 days and I can't decide whether I have a faulty battery or if the iPhone 17 battery is just poor in general. 
For example, phone was taken off charge at 7am this morning. It's had very light usage and no social media at all. It is now on 13% at 21.55. When I had my 15 pro max I used to go to bed and still have like 30-40% battery left. 
I would be grateful for anyone's advice. Thanks 🙂

[TimmyBGood]

@Jessdav96x 

A quick look online finds multiple reviews, all of which discuss battery endurance.

For example:

Our battery test involves streaming a full HD YouTube video over Wi-Fi with the screen's brightness set to the max. Under these circumstances, the iPhone 17 lasted 24 hours and 31 minutes.

https://uk.pcmag.com/mobile-phones/160116/apple-iphone-17 

[PandJ2020]

Go to settings > battery, scroll down and see what app is using the battery

It could be the initial indexing etc. that iOS26 performs which will reduce once complete