My iball 6318i battery is draining so fast .. tried lots of apps but same :(

hello guys this is my first post in xda :D
i have owned a i ball 6318i android tablet
it's battery draining too fast !!!!
i also reset my tablet 5 times but no luck :(
my tablet is rooted also :)
i tried lots of apps to save my battery like 'Deep Sleep Battery Saver" ' Greenify' 'One Power Guard' 'Du Power Saver' etc etc...
so anyone can help me to save my battery :(