Hello Danko623,
Welcome to Apple Support Communities!
To help us isolate the battery issue, if you check Settings > Battery > Battery Health, do you see any error messages about the battery condition?
Let's determine what is using the most of your battery by checking Settings > Battery, then viewing the usage to determine if any apps are using more power than expected.
This Apple Support page has the full details: About the battery usage on your iPhone, iPad, and iPod touch - Apple Support
You can also use the steps on this link to check your settings to ensure you're getting the most from your battery: Batteries - Maximizing Performance - Apple
We hope this helps.
Cheers!