phone drains faster than the estimated usage times

[Zapster PLAYSMINECRAFT]

My phone's battery drains fast its 1% in 1-2 minutes. I have this trouble for a long time I just used it with a charger since then but if I was going out like a road trip it drains fast and I need a power bank. I looked at the estimated usage time and just looked at it while the battery percentage is going down. I saw that in 6 min I drain 1% but it's clearly been looking at it like 2 minutes.6:30 to 6:51 100% to 87% in just that time only

 

[B. Diddy]

Welcome to Android Central! Which phone? Charge up to 100%, then let it drain to 20-30% with normal usage, without charging in between. Then show us:


1. The main Settings>Battery screen.
2. The fullscreen battery graph screen (which shows Awake time and Cell Signal Strength).
3. The Screen category (to see total Screen On time).
4. The Cell Standby category, if present (to see Time Without Signal).


http://forums.androidcentral.com/ge...ide-how-post-screenshots-android-central.html
You might have to install a 3rd party battery monitor, like GSam Battery Monitor, to get the Cell Signal Strength graph.