1- So First Tip is Here ,If you are smart phone user you know Phone over heating Problems and It is the great enemy of smart phones batteries so always prevent your phone to overheat.
2- According to experts, keep in mind that do not put your phone on car dash board and also prevents it for direct sunlight.
3-Never Use local power Banks or fake chargers ,these power banks charge your mobile very fast no doubt but they also damage your battery life very fast so next time when you going to buy charger or power bank buy only branded items.
4-One more important Thing which must be remember do'tuse your phone while charging it means if you plug the charger in power slot then avoid to use phone.If you use phone at same time when it is charging then it damage power life of batteries.
5-When Phone is charging do'tplay heavy or graphics games.It should also be avoided as it causes damage to the phone and the battery temperature increases. Experts believe that the ideal temperature for the phone to charge 20 to 30 degrees Celsius.
6-–According To experts it is not necessary To charge your mobile 100 % every time or Only charge when your Battery is 0 % . Charge it right time according to your need and one more thing keep the phone charging and going to sleep is also reduce battery life so avoid it.
7-Last But Important Things some peoples use their phone until it does not reach critical level so avoid such habit, Put your phone on the charging before it comes to 10 percent .
There is lots more points which save your Batteries life But If you Follow This 7 Tips then i hope you Find your battery life increase and you use your smart phones batteries longer.