iPad Air 1 battery life dying too quickly...

So I have an iPad Air 1st gen (without Touch ID) 32GB WIFI only model, on the current iOS 10.3.2 software. I use it for normal use, going on Facebook, checking my emails, and occasionally playing a game or two. The past few weeks the battery seems to be dying at a much faster rate then a few months ago. I'll fully charge it, and in a hour of checking my emails it will go from 100% down to 10% (normally I would get at least 6 or more while playing games.) Any thoughts on what could be up with this, and is my only option going to apple for a fix?

I have been around apple products for a while and went through the normal disabling background app refresh, closing an app when I was done before I went to another app, turning the brightness almost all the way down, etc.