IPhone 5 battery life charging slow but dying fast?

I noticing my iPhone 5 is charging ridiculously slow. For example it could be an hour starting at 0% and by the end of the hour it will be at like 20%. But within an hour at 100% it will be at 70%. What's going on? My lighting is low and Bluetooth is off. So I don't understand what's going on here.

New battery needed or have battery charger checked had that

There are several apps you can get that can show what apps are devouring your battery. Also, what kind of battery is in your phone and when do you charge it?

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