We've been having our Hybrid Highlander for 2 1/2 weeks now and we really love it. So far we have put about 500 miles on it. One thing I noticed is that the battery is never charged to full. The highest charge level I've seen so far is ~9/10. I personally don't see this to be a problem. As a control engineer, I know you shouldn't constantly reach the capacity of a reservoir, otherwise it's gonna overflow. I'm just wondering whether this is by design and whether other HH owners are seeing the same thing. And will this "under-charge" affect the battery life. I don't see this mentioned in the owner's manual.