iPad Mini 1 battery life issues iOS 9.3.5
I purchased an iPad Mini 1st generation 32GB secondhand yesterday, and I have noticed that the battery is draining more than expected. I charged it up to 100% this morning, and it is currently on 82% after 2 hours and 14 minutes of usage (currently 5:18PM AEST). I am unsure if this is due to an older device; or if it's just a software bug and can be fixed with a software update?
Is anyone else experiencing the same issue with their iPad Mini 1 running on iOS 9.3.5?
iPad mini Wi-Fi, iOS 9.3.5, 32GB