I bought an Alcatroz Airwave 300 which is a bluetooth headphone. It is my first heaphone I own after 5 years of using earphones. Now I'm a bit curious because of the charging time of it. I searched the google and then I searched for this kind of battery 220mAh Lithium ( i don't know if its a ion or polymer). I estimated it for about ten hours because the user manual said IF THE RED LIGHT INDICATOR IS OFF THEN ITS CHARGING IS COMPLETE. I kept waiting for three days now since I bought it four days ago. Now I have to estimate again for 17 hours which is TOO MUCH. any owners or idea?