I have noticed a big difference on the charging speeds with my iPad Air 2 with the short 1M and the longer cable 2M with the power adapterl With the short charging cable 1m it only takes about just over 3 hours from 5% to full 100%. And with the longer charging cable 2m it takes over 4/5 hours to charge from 5% to full 100%. So why with the longer charging cable 2m takes longer to charge my iPad?? I think it should be the same with the short charging cable like only 3 hours. Is it because the 2m charging cable is longer so there before it takes longer to charge my iPad with the power adapter?? Is this normal??