No idea.Why?
I'm at 24 days without a charge. I am only using in eco mode with Hiby Music, WiFi/BT off.
I haven't used it in about a week and it was fully charged. I'll try testing it again but the battery life has been bad when I turn it off or in standy mode. Playing in class A battery life is bad and thats expected. With class A off battery life is really good, one time I forgot to turn it off and it was playing a good 30 hours till I realized it was on.
I'm not sure whey its draining so much battery when I power it off.