Hi, Recently have replace my 4S with and 5S for work use. With around 2 weeks of use the battery drain was too big with 1 hour of use and 8 hours of standby my battery drops from 100% of charge to something like ~ 30%. I don't think that's normal, have all models since 3GS and even this don't have this discharge speed. Last days replace the battery to a new one. Can't identify if this is good or bad. The specifications of manufacturer has the same as original, the description uses OEM at description. So with a new battery, wit 6 load cycles with the same capacity have exactly the same problem (with this new battery can have a little bit more of use). I have no idea about whats the problem here. Have no warranty, so can't ask to Apple repair if need. What can I do to bypass this problem or at least identify the problem itself? Thank you! Regards.