No Percent Charge Option, Right?

Some BEVs have that option, but it comes with the warning on repeated use shortening the battery's life. A PHEV isn't going to allow it because of the emission warranty.

 

We're talking about having a larger buffer increased longevity, not making it smaller for increased range.

 

I think the confusion was with an option on the Leaf to limit the charge to (I think) 80%. But Nissan had to take that option into account when computing the range, and this lowered the number, so in later models, they eliminated that option, so they could base the range only on 100% charging (long term damage to battery notwithstanding), getting a larger number for the range.

This info is a couple of years old, so my apologies if it is out of date for the current Leaf model.

 

There is simple workaround to achieve your goal:

use scheduled charging with the departure time set up suitably later than your actual departure>

What I have learned the Prime Scheduled charging works to complete charging 'around' the set up departure time depending on actual baterry level.

So in your case to have 21 miles charge on departure simply set up scheduled departure to 35-45 min later ( a "delay") than your actual departure (depending what is your average full charge e/v range). On departure just unplug the car and see what is your range.

I believe after a week of trying different "delays" you will be pretty close to your goal.

just my 5 cents.

Kris

 

You're a type A personality?

Bob 'retired' Wilson

 

type "A"???
I have no clue
Just try to contribute to the forum since I gained a lot of knowledge from here.

cheers

Kris

 

The finish timer is really conservative. I'd say it finishes 20-30 minutes before the time I specify. That's why I recommend 1 hour past.

 

As technologically "challenged" as I am, that's what first came to my mind. If planning to leave at, say, 8:15, just tell the car you want it to reach full SOC by about 8:45 if on a Level 2 EVSE (J1772 connector), or by about 9:15 if using a standard 110V outlet....

 

Then use the same trick I use for this. Set the timer for later than when you actually want to leave. For example, I leave for work between 6 and 6:10 but I set the timer for 6:45, which usually gives me about 85-95% of a full charge.

 

And if you are truly anal, of which I am too, keep in mind the last 30 minutes or so charges slower than at the beginning. Meaning you charge at roughly 12 amps? up to the last half hour where it slows considerably. If you are targeting 80% useable capacity, account for the fact that charge rate is not linear at the end.

 

That's your problem.

If you really only want a 70% state of charge, you need to have it end about 2 hours after your expected departure, if you are on L1, and

This seems to indicate you are on L2, but it will take about 1:20-1:30 to get from 0 to 21 miles at 240V and 16A.

Not if you set it right. The problem is accounting for the taper charge. The charge rate is not linear if you include the end.

 

Not sure this is completely true, for the most part the charge window from any point is the same. So if you have 25% charge remaining when it reaches 50% charge the amount of time to go from 50 to 100% is the same as if you started at 50% charge. There is some variance caused by the warmup period to get the battery into the optimal charge temperature but otherwise it should be about the same. So sure there will be slight variances, but if you allow for a window of 80% to 85% you should be fine, that extra 5% isn't going to buy you a coffee or anything but would be enough buffer.

 

At some point you're going to wonder how much anguish and complication are you going to take for $50 a year? I'll be honest. I did the mental calculations for two years, then I said not worth it, just gonna plug it in.