Unfortunately I found the same symptoms: load very long.
I said that the problem does not come from my smartphone normally charging with a conventional charger (not a couple USB Charger + cable)
Thanks to an application it is possible to determine the actual load current. Result:
- New couple charger and USB cable => 200mA load (ie, you have 24 hours to charge my smartphone!) See no load at all (bad contact after 24 hours!)
- New USB charger with the original cable => 400 mA load (it takes 6 hours of load)
- Old and new cable charger => no load
- Loader I'm currently using my home (Samsung ETA0U10EBE) => 700mA load (3 hours)
Basically, the supplied cable is faulty and the charger does not supply the promised 1000mA.
I had relied on previous reviews but we must believe that it is the lottery with this type of accessories.
In short, very disappointed.
EDIT: I requested a refund from Amazon.