Greenify - Greenify is a mobile app that gives you greater control over your Android device's power usage, allowing you to get a lot more mileage out of your battery life without having to constantly plug it back into a charger.

GSam Battery Monitor - Monitor your android devices battery usage.

Power Battery - Power Battery, as the most professional battery saver app, could get up about 60% more battery life for Android phones or tablets.

Accubattery - Monitor's battery capacity through the use of science

Fancy Widgets - Fancy Widgets is one of the most leading and feature-rich personalization applications that offers almost the useful widgets to make your screen interesting and full.

Battery Saver - Battery Saver is a perfect tool for those smartphone users who always remain worried about the health of their phone’s battery.