I can't understand why this happens. Earlier this year when I did an update, my battery life completely tanked after it competed. I ended up having to shut it down a few times and then restart it to fix it. Now today, I did the latest update and it's doing it again. The battery starts dropping by one-percent every couple of minutes or so. By comparison, when it's working like it's supposed to, I usually end the day with about 66% or so of its power remaining after a full-day of use. Any thoughts on why this is happening? I've closed apps....I've rebooted....I've done all that I can think of to fix it.