PSP battery drains fast?

Battery Drains Fast in Xperia Z?

• I have Xperia Z. My Battery Life was OK and lasts upto 1 and half day or 2 days comfortably. But recently, my battery drops to 4% and after that, I charged the battery to 100%. Since ...show more

• Answer:

  Unless the battery itself is dying (usually last 3 years), it's likely some apps are keeping the phone from deep sleep and thus keep draining the power fast. You can install Greenify to combat this issue which may or may not be solved. Turn off wifi manually helps too. Another reason is the battery % is an estimate only. If you keep recharging it randomly, the accurate will diminish. You can do a deep discharge and then fully recharged it for better estimation again. However, deep discharge is bad for li-ion so don't it often.