Yes.... you could plug in when going to bed - rates are a little higher, but better.
However, I set my charge to 90 %, saw it start to charge. Stopped the charging. Then a few minutes later, it started charging again. I stopped it and decided to move the charge indicator to a point below the current level. Waited a few minutes, nothing happened.
So I went to bed and figured I would move the charge indicator forward when waking in the morning - this would give me enough for the day.
BUT, upon waking, it was fully charged!! 100% !! The indicator was still way down where I had put it. What's confusing is that it charged higher than the original 90% setting.
Now leaving it unplugged when no charge desired.
Gotta get them programmers working!