iPad Air iPadOS 16 Battery Drain

Before updating, my iPad Air had light usage, I could go 7 days after fully charging and the battery would still be 25%-30%.

Now after updating to iPadOS 16 the battery goes flat after around 36 hour of no usage.

As you can see from the picture nothing has been used apart from home & lock screen and the battery is already at 35%.

I still have 7 months of warranty remaining, should I raise this as an issue with support?