Hi so i just purchased a new android phone and well after draining the factory charge to 15% my android is telling me to charge it and so i did but it only stops at 60%. I tried using other chargers but the result is still the same. So what i did is i drained until it dies (0%). After that i charged it and surprisingly it went until 100%. So my question is why did it not charge pass 60% before? thanks!