DS Battery Saver will work much better to prevent drain when you're not using your phone by Making CPU sleep if not in use. Haha Tapos install ka rin ng Greenify(Works on Rooted and Non-Rooted phone) or Juice Defender, wag kayo mag install ng DU Battery Saver/Battery Doctor etc. dagdag RAM usage lang yan, mag cause pa ng pag-init ng CP mo at battery drain dahil nag run ito sa background. Much better kung ROOTED phone mo, mas makunat pa batt mo by underclocking CPU and GPU Frequency and changing Governors.