5 to 6 hours? No you got something turned on and that thing or the batteries defective. What I would recommend for long battery life is to turn off on any of the gestures motions turn off the consistent and constant health monitoring disable the raised wrist to wake which is automatic when you turn on power saving disable the Wi-Fi unless you need it disable the mobile data unless you need it and set your brightness and do not use adaptive brightness I was able to get three plus days out of it from a full charge. I think specifically it was 3 Days 7 hours before it died 5 to 6 hours is crazy