I’m seeing the same problem with my HiBook. I put the tablet to sleep the other day, unplugged, at 100% battery. Exactly 4 hours later I woke it up and it was down to 17%. I know that’s not the same issue, but I wonder if the horrible power draw these Hampoo motherboards seem to have is causing the chargers to be barely effective? I basically have to charge my tablet at night, fully shut off. And then I think it takes like 6 hours to charge. And the HiBook has a 3A charger! But I think it doesn’t even come close to utilizing the capabilities of my chargers. Oh yeah, I bought a 3rd party high quality charger, tested by pros, and it’s the same story. So I think the tablets are at fault.
Philippians 2:4 Let each of you look not only to his own interests, but also to the interests of others.