Upgrade mo sa Android Marshmallow, hindi mo na kelangan ng battery saver apps.
Pati yung mga task killers medyo redundant na rin. Yung Marshmallow built-in na ang mga features na ito. What batt saving apps mainly do is look for high consumption apps and shut them down. Problem is, kung madalas mo sila gamitin, like Facebook or Gmail, every time you open them, mas matakaw sa resources ang process na open-close-open later. Marshmallow is smart enough to recognize your usage pattern and allocate resources when needed. Marunong din siya mag-shut down ng apps na palagi nasa background pero hindi naman essential, like GPS kung nakapatay naman ang screen