Note: I'm using the original moto g charger "500 mah" that came in the box with my phone.
1st 100% charge overnight, then lasted almost 14 hrs.
2nd overnight charge, only did 95% "even tho it was plugged for 7-8 hrs" and lasted 7 hrs before battery go to zero level and device shut down.
when my phone shut down, it got stuck at the coma status, I tried every method mentioned in this post but the "waiting till the next day method" and nothing did work.
methods I used: freezer, fridge, 18 sec power on, 1 minute power on, 2-3-4 minutes power on and even the exact method on Motorola website and that method one member suggested to blug in the headphone while trying to power on or charge.
chargers I used with every method: Moto G 500 mah, Alcatel 550 mah, Galaxy Tab 7 2ah and Blackberry USB cable on computer.
result, nothing! phone still dead, and i can't return it cause I'm in a different country now and we don't even have it yet here.
my Moto G is 16GB, dual sim and running stock Kit Kat 4.4 which is available for the phone. no modified roms or any other dev setting was applied, the phone wasn't rooted. it's just like out of the box, few apps installed "some of them are downloaded from the internet" and stock upgraded to kit kat.
before hitting the zero level, the phone was charged for few minutes on a samsung charger, most probably it's for a note 3. when it went off I tried a car charger "bleackberry" for few minutes which gave me 3 pulse led white notification and nothing else.
I guess this shouldn't be related to the situation, but I'm using a data sim as sim 2 for internet and sim 1 for calls only. phone internet is running on H+ most of the time, 3G the if not H+.
I'm going to wait till tomorrow and try again, hopefully it works. but if anyone got any ideas or solutions PLEASE go on and reply with it even if you're not sure or if it's a crazy idea out of the box.
I only used the phone for 2 days I had VERY high expectations for this phone
(Update 1) I left the phone unplugged for 12 hours, plugged it in the 550mah charger for 2-3 hours, pressed the power button 1-2-3 minutes and no results still. also motorola Asia didn't reply to my email yet.
(Update 2) I unplugged the battery and put it back on, still nothing. some guy told me to connect it to a box and restore the software back to Jellybean and that the box should be capable of booting the phone up. will try that and refer back to you.