Why does my phone battery discharge quickly?
  1. Your battery is aging and needs to be replaced with a new mobile phone battery. If you use a new battery and still lose power quickly, don't be surprised, it means that your mobile phone electronic components are aging,Changing the battery can no longer solve your problem.

 

  1. How old is your smartphone? More specifically, how old is the battery? Smartphone batteries start to lose performance with time (as well as constant heat).  In fact, age is the primary reason your battery life gets shorter as your phone gets older. This means anyone rocking an older phone is likely reminiscing about the old times when the phone used to last much more on a charge..The aging of mobile phone electronic components, such as the aging of the CPU, will cause high temperatures, and the continuous upgrade of the software will quickly run out of battery power.

 

     3. You shave a second or two off of your phone’s maximum battery capacity every time you charge it. Batteries use chemical reactions to store and process energy, and no chemical reaction is infinite. The method has been optimized like crazy, though, and that’s why batteries last as long as they do to begin with. Additionally, batteries lose capacity even if you don’t use them.

 

How to fix it

Buy a new phone!: It may sound a bit depressing, but once a battery is too old to function efficiently enough, there is nothing sensible you can do about the issue.

Change the battery: Phones with removable batteries are scarce now, but if you happen to be rocking one, you could buy a new battery and replace the worn-out one. If you have a phone with a non-removable battery (which is likely the case), you can open the phone up and change the battery, but this requires some technical know-how and involves some risk. You can also find a phone repair shop and have them take care of the job for you.