Strange Battery Issue

[tmal2]

For the 2-3rd time I turned my phone off with a 50-70% charge when I went to bed. When I woke up the following day and turned the phone on I was down to 5-10%.
This is a brand new replacement phone and battery I just got due to voice quality issues with the first one.

My first phone never did this. Is anyone else having this problem or know why it's happening?

 

[Corinacakes]

i think everyone has this problem. i keep mine plugged in all night or i wake up and it's dead