Help ZTE GRAND X2 Help Battery keeps running out

[jcancer6]

I have a zte grand X2. I have had it for over a year now. The battery keeps running out. I have to recharge it 3 or 4 times a day. I have removed many app including games and the Facebook app and it still makes no difference. When I check the battery it always says the display uses 100% of the battery. the display is kept on low brightness and the timeout is low. Can someone help me with this?