How to increase battery life of android phones

HERE IS A BEST WAY TO INCREASE THE BATTERY LIFE OF ANDROID OR ANY OTHER SMARTPHONEs

BY the following tips the battery life of your smartphone can be upgraded like i upgraded of my LG Nexus 4...the tips are:-

• use your full battery life which means take it upto 0%(percent)once in a month.
• full charge it...
• when u have battery life of 25% use your save battery or power saving feature which u can see in your notifications menu,which seems to look like 

• there is one other menu also which u can acsess by going to setting > battery.Then u can see that which app is using most battery of your phone from there u can stop that app..A IMAGE IS SHOWN BELOW FOR MORE INFORMATION.....