I got a moto-G  recently  the phone was not used for a while and it went on to 0% Mode. Found a way to fix it.

  1. Step-1: Relax you can work it around, the phone is NOT dead
  2. Step-2: Put it for charge for at least 15 min
  3. Step-3: Press the power button for more than 18Sec 
  4. Step-4: The Phone should reboot

I missed to take a photo before when it was 0% charge, but not its working fine.