I've replaced my damaged battery with a new one in my Samsung Galaxy Note 2, but it drains too quickly.

After fully charging the battery, when I leave the phone without using it (the screen is totally off & no apps running background), the battery level gradually reduces to 87% with in 20 to 30 minutes.

Below 87% to 36%, the battery performance is petty good, but when it is below 36%, the battery drains too fast. It falls to 0% within 5 to 10 minutes, and if I play any game when battery level is around 30%, it shuts down without informing me the battery low information.

I changed the battery twice from the shop that I bought it from, but the same thing occurs.

Why is my phone draining my battery so quickly (and inconsistently)? Is it a battery/software/hardware problem?

  • If you can try a different battery do it, the batter you picked up could be faulty. If the problem persists across multiple batteries then we can narrow it down to the phone itself. – ZeroPaladn Jul 21 '15 at 14:51

Please check is there any application having more number of services. Setting-> Application -> Running.

If there is more number of services it will eat your battery.

The main thing is your display will drain your battery. So that the android OS recommend that the following



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