You are right, your Android doesn't need to be re-charged so often!
Meet "GreenPower Battery Saver" - https://play.google.com/store/apps/details?id=org.gpo.greenpower&hl=en
GreenPower battery saver brings many extra hours to your battery life! No hassle and regular configuring, install, tune settings once and it will run automatically.
Some features to mention:
• Adds up to 100% battery time depending on usage
• Manages your Wi-Fi, Mobile Data (2G, 3G, some 4G) & Bluetooth automatically
• Works with almost all devices and carriers
• Supports all Android versions from Froyo to Jelly Bean
2.1 and up