I've noticed the Moto G can typically go 36-48 hours (or more?) without a charge (depending on how light your use is).

Sometimes I come in and crash without putting it on the charger and realize what I've done the next morning. When that happens, I don't have to worry about immediately charging it even then; usually it still can make it to the end of that day (business hours) without being on a charger. This happens around once a week or so, maybe more sometimes.

I'm on my second Moto G, and this has been true for both, so it's not a one-off thing.