How to properly charge the Moto G4?
If you are just setting up your Moto G4 Plus, new batteries are not fully charged. Plug the supplied battery charger into your phone and an electrical outlet. It may take several seconds to start charging the battery.
If your battery is completely discharged, it may take several minutes for the device to begin charging. The battery needs to charge to a minimum voltage before the system can boot up, and this may take a few moments to achieve.