My 5c battery is dying quicker than normal?

I got my iPhone 5c in June and it's been great, but this past week it's battery life drains the entire battery in about 4 hours, I don't text non stop because I'm not aloud to even have my phone at my job from 8am - 5pm then when I'm at home I'm with my family cooking and cleaning, the only apps I use is snapchat and Instagram and every once in awhile I use my Pinterest. I think it's because I used my friends cheap charger for a couple days, but maybe I'm wrong just wants some opinions, maybe I hit something in my settings or an app I use is bad.

Your settings is probably in a very high usage such as high brightness. High brightness, high resolution etc., can deplete your batterys' life overtime. If you leave your phone open during charge, that is probably why. I recommend shutting down your phone and let it recharge itself to a hundred. I heard that every battery of any kind has this type of liquid that let you recharge (phones, laptops etc.). Once the liquid is all gone or used up, you can no longer recharge. Hope this helps!

Double click the home button and swipe up on apps you are not using to close them, turn off bluetooth, turn your brightness down, and password protect your phone to save battery. When not using it, make sure to turn it off. Also, when charging your phone, turn on airplane mode to make the charging process quicker. "if the problem persists, make an appointment at an apple store or find a place where you can replace your iphones battery.