I've had my 735 for about 1.5 yrs and I am suddenly experiencing battery life issues. I did a 68 mile ride the other day, and the battery only lasted 4.5 hrs which means it ran out before I finished. Today, I ran for 2:35 and it was down to 23% at the end of the run - and it was fully charged at the start. I only had standard GPS and the wrist HRM on, no notifications, turned off bluetooth, etc. My running partner only had her 620 drop to 75% after our run. Is this a result of the recent upgrade? Or is 1.5 yrs nearing the end of life??? PS I have an old 305 that still works.
Even though the watch restarts as part of the install process I always do another power cycle afterward as a precaution. I've had too many odd things happen after an update on several models they were cleared up by a restart.
I’m with R Tellis. There are posts all the time with people saying there battery life has gone down after a firmware update for lots of different watches. Press and hold light for 15secs and see if that cures it.
