BestPal wrote:The problem is that charging guess-ometer is way off. It starts charging way ahead of time. For example, it thinks that it needs 16 hours to charge when indeed it needs only 10-12 hours. And then it sits there fully charged WAY before your "leaving time". Thus for planning your charging End only time should work well in theory... but it just doesn't.
So what? Yes, end-time-only does tend to end somewhat early. And this difference is greater if a climate control timer is set.
The difference in time is less if you charge at L2; if it is important to you, that is an option. (Nissan doesn't expect people to routinely charge at Level 1; that is for opportunity charging away from home where there are no charge stations present.)
As for finishing several hours early being bad for the battery, that is a stretch. Leaving the battery for days or weeks at 100% is not a good idea. Leaving it for a few hours at 100% (or 80%) shouldn't matter very much. This is much ado about nothing.
Nevertheless, if you want to have the charging finish closer to your departure time, all you have to do is set your departure time after
you plan to leave. I do that and it isn't a big deal. You already have an idea of how early the charging finishes but, even if you didn't, you could do the experiment by iteration: just set the charging end time back by an hour each day until you find that the car is still finishing when you leave, then push it forward a bit. Not very difficult.
While it would be nice if the end time was more precise, it is actually a hard problem since charging speeds depend on a number of factors such as voltage and the temperature of the battery (not to mention preheating/precooling, if used). It also doesn't really matter if the charging finishes somewhat early.