Battery Booster & Insights HD is another good one. Its simpler to use and interact with.
First, some background: most smartphones have either a Lithium Ion battery or a Lithium Polymer battery. Both are Lithium Ion though, and as such, do not have a ''memory'' which means you don't have to fully charge or discharge them at the beginning, and partial charging is fine throughout their life.
In fact, these types of batteries suffer from low voltage problems, so it's actually better to partially charge them (say, from 20 percent to 90 percent) than to fully charge and fully drain them. Battery care is always open for debate though, so for every accepted tip there will be someone that says it makes no difference. Just find the ones that work for you.
1. Black wallpaper can save battery
If your phone has an AMOLED screen (like most Samsung devices), use a dark-colored background. Black wallpaper can save your battery because AMOLED screens only illuminate the colored pixels. Black pixels are unlit, so the more black pixels you have, or the more darker pixels, the less battery you need to light them up.
2. Use dark themes and settings
Using darker app backgrounds/themes and darker launcher themes will further prolong your battery life (but only if your device has an AMOLED screen). The first version of the Android M developer preview had a stock dark theme (which was subsequently removed). This could means big things for system-wide stock theme support, if it returns in the final Android M release.
Will we see a system-wide dark theme in the final Android M release?
3. Don't use adaptive/auto brightness
Don't use display auto-brightness. It may sound good, but auto-brightness is usually way brighter than you really need. It's much better to manually set a super low brightness level that is still comfortable, and then just bump it up when necessary. This is one of the main ways to improve your battery life as the screen is one of the biggest battery suckers.
4. A shorter screen timeout setting saves battery
Set your display's screen timeout to as short a time as is practical for you. Just think, if your screen timeout is set to a minute, it'll use four times the amount of power to have it on, every time you switch your screen on, than if your timeout is set to 15 seconds.
Studies report the average smartphone user turns their smartphone on 150 times a day, so anything you can do to limit that frequency (through self-control or other methods listed below) will help keep your battery running for longer.
Avoid adaptive/auto brightness (left) and shorten your screen timeout/sleep setting
5. Your phone doesn't have to be smart all the time
Turn off smart features like air gestures, smart scrolling and the like, especially if you have a Samsung. Unless you really use these features every day, they're just using battery power for a feature you don't use.
6. Turn off vibrate and haptic feedback to save battery
Switch off vibrate. Unless you really need that added awareness, turn off vibration alerts for incoming calls. It actually takes more power to vibrate your phone than it does to ring it. Turn off haptic feedback too (that buzz you get from typing on the keyboard). Sure it feels cool, but it doesn't really add anything to your experience, and it's another battery drainer.
You won't even notice that vibration and haptic feedback are gone after a few days
7. Use lock screen notifications
Lock screen notifications can also help save you battery life, especially if your phone has an AMOLED screen. This is because you can see your notifications at a glance without having to turn your whole screen on. This is especially useful if you get lots of notifications that aren't worth following up on immediately. Lock screen notifications come standard on Android Lollipop.
If you're using Android KitKat, try using lock screen widgets or notifications if your ROM supports them, or install an app that does it for you like Dynamic Notifications. You'll be able to get basically all your content without having to unlock your phone fully and navigating around. You'll still need to light your whole screen up, but you'll have it on for much less time than normal.
8. Only use original batteries
Only use original batteries or respected third party manufacturer batteries. Saving a few bucks on a battery that might damage your beloved smartphone is a poor choice indeed, and may also deliver sub-standard battery performance.
Stick with OEM or respected third party batteries rather than dodgy cheap ones
9. Set your ''Do Not Disturb'' or ''sleep'' schedule
Set ''sleep times'' or ''blocking mode'' to switch off Wi-Fi and mobile data when you don't need them. If your phone is basically off limits at work, set your device to not ring, vibrate or connect to the internet while you're at work. Many phones have a ''Do Not Disturb'' setting for just this purpose.
Likewise, you can set your phone to airplane mode when you're asleep or use sleep or blocking modes to set up limits for what your phone does during certain times of the day, whether that's while you're asleep, at work or in a meeting. Cool apps like IFTTT let you create rules that can help you save battery life too.
Get to know the specific settings your ROM offers. Not only will you have to fiddle with your phone less throughout the day (or night), but you'll be saving on battery life too. You can also use an app like Greenify to force certain battery-hogging apps to hibernate when you're not using them.
Many phones let you set ''downtime'', ''sleep'' or priority interruptions only'' schedules.
10. You don't need to be connected 24/7
Turn off GPS, Bluetooth, NFC, Wi-Fi and mobile data whenever you don't need them. Turning off location data, or changing your Location settings to use Wi-Fi or 3G data rather than GPS works perfectly well.
Only turn on Bluetooth and NFC as long as you need them (even though these consume very little power), and there's no need to have both Wi-Fi and mobile data turned on at all times, especially if you know exactly when you'll need one or the other.
If you use Wi-Fi a lot though, say at home and at work, then it makes sense to keep set your Wi-Fi to ''Always on during sleep'' as this uses less power than to have your Wi-Fi reconnecting every time you wake your phone.
Make use of the Airplane Mode and Data toggles in Quick Settings (left) and use the battery saving mode for Location.
11. Don't get bogged down by widgets
Ditch widgets you don't really need, especially those that are connected to the internet like weather widgets. If you have multiple widgets across several home screens that are constantly syncing and updating, like Twitter, reddit, weather, Gmail and more, you're not doing your battery any favors. Just hit the apps when you need them.
Note: 3 unnecessary links removed by moderator.