Moto X 2nd gen green notification light blinking when plugged in and does nothing

A

AC Question

I am facing a problem wih my MotoX 2nd gen. I think the battery is exhausted. So, now when i put my charger in, the green notification light blinks and happens nothing. The problem is I am not able to go to the Boot mode select menu now. I have tried pressing the volume down button and power button but of no use. Pleasae help