probably most people dont, me included.meh, I've never taken 4 and 1/2 minutes to fill a bottle oh well, my bad! sorry for the incorrect answer
You should never leave it empty anyway.I do the same, but the way I see it, if it fills at 250psi/sec, you fill for 5 seconds, then wait 15 secs and fill some more, you still filled 250psi/sec for 5 seconds, so the damage is already done.
Sure, the heat buildup wont be as bad, but the inner lining has already expanded faster than it should