Mauileaf
Posts: 89
Joined: Sat Sep 08, 2012 10:47 am
Delivery Date: 06 Sep 2012

100% trickle charge gets me 67 miles. Day 3

Sun Sep 09, 2012 10:12 am

AlOha

I live in Maui and will enjoy everybody's help and experiences. Just as the title says. I don't have it set to 80% as my last leg home is an uphill climb for ten minutes and it charges fully every night and only shows me 67 guessed miles. However I quickly gain it to 100 coming down the hill right off the start. Normal battery, trickle charging behavior?

I haven't gotten the level 2 yet.

Thanks,

Mauileaf

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ebill3
Posts: 1400
Joined: Fri May 27, 2011 1:23 pm
Delivery Date: 15 Sep 2011
Leaf Number: 7964
Location: Puyallup WA

Re: 100% trickle charge gets me 67 miles. Day 3

Sun Sep 09, 2012 10:35 am

Mauileaf wrote:AlOha

I live in Maui and will enjoy everybody's help and experiences. Just as the title says. I don't have it set to 80% as my last leg home is an uphill climb for ten minutes and it charges fully every night and only shows me 67 guessed miles. However I quickly gain it to 100 coming down the hill right off the start. Normal battery, trickle charging behavior?

I haven't gotten the level 2 yet.

Thanks,

Mauileaf
Welcome to the forum.

L1 vs. L2 has nothing to do with what you are seeing at the Guess-O-Meter. A charge to 100% is a charge to 100% with either.

The computer predicts range based on recent driving. So, ascending your hill results in a low miles/kWh, and the computer assumes you will be driving like that in the future. Ergo, 67 predicted miles. But, you start out going down hill, using no power or little power, resulting in a high miles/kWh. The computer now predicts range based on that higher miles/kWh.

There is probably more involved in the computer logic, but basically, it is previous style to predict the future.
All electric - red LEAF, green Tesla S. No ICE.

Mauileaf
Posts: 89
Joined: Sat Sep 08, 2012 10:47 am
Delivery Date: 06 Sep 2012

Re: 100% trickle charge gets me 67 miles. Day 3

Sun Sep 09, 2012 10:52 am

interesting..thanks for the quick reply

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TonyWilliams
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Re: 100% trickle charge gets me 67 miles. Day 3

Sun Sep 09, 2012 10:54 am

Please check out the Range Chart in my signature line.

ericsf
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Location: San Francisco

Re: 100% trickle charge gets me 67 miles. Day 3

Sun Sep 09, 2012 10:55 am

I'm in the same situation as you: I live uphill. But I have L2 charging and I observe the same behavior every single day for the past 1 1/2 year. The car computer gives you an estimate driving range based in the guess that you will continue to drive uphill. Hence the nickname "GOM". Experience and Tony Williams range chart http://lovemyleaf.com/ are much more helpfull to determine how far you can drive than the car's "Distance to Empty" display.
SL w/ QC (3/5/2011) - 11bars on 1/23/2014 @ 54k miles - 10 on 12/23/2014 @ 73k - 9 on 10/5/2015 @ 85k - 8 on 7/3/2016 @ 96k

gfederas
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Leaf Number: 5536

Re: 100% trickle charge gets me 67 miles. Day 3

Sun Sep 09, 2012 9:24 pm

If you start downhill like I do, charging to 100% overrides the normal regen braking downhill. Regen wont kick in at all until you are under 90-95%. Since the batteries are fully charged, there is no place for the charge to go. If you have a place to recharge away from home, I would charge 80% outbound and 100% inbound since you have a steep climb at the end.

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planet4ever
Posts: 4674
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Leaf Number: 1537
Location: Morgan Hill, CA, south of San Jose

Re: 100% trickle charge gets me 67 miles. Day 3

Mon Sep 10, 2012 1:21 am

If you are able to trickle charge to 100% overnight (presumably that means in less than 15 hours), you must not be using the bottom part of the battery range at all. I'm betting that you can charge to 80% at night and make it home without adding any charge during the day. As gfederas pointed out, you can't get any regen when you are at 100%. Depending on the steepness and height of your hill, you may discover that if you start down with 10 bars you will have 11 when you get to the bottom. If you are now getting home with - say - three bars, you might then get home with two bars instead.

Cycling between 10 bars and 2 bars (with a brief peak at 11) is going to be better for your battery than cycling between 12 bars and 3 bars. Some people might disagree with me, but I think the same rule still holds if you are currently getting home with only two bars: Cycling between 12 bars and 2 bars will wear your battery out faster than cycling between 10 bars and 1 bar.

This is really debatable, but I think dropping down to Low Battery warning is not much harder on the battery than charging to 80%, and charging to 100% is more like dropping a bit past Very Low Battery warning.

Ray
End of April 2013: Traded my 2011 SL for a 2013 S with charge pkg.

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ksnogas2112
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Re: 100% trickle charge gets me 67 miles. Day 3

Mon Sep 10, 2012 8:28 am

I'd check the nikpix Nissan Leaf Range Estimator as well. It lets you use google maps to get the elevation changes and uses Tony's chart to do the math for you. Android version:

https://play.google.com/store/apps/deta ... dlQ2FsYyJd" onclick="window.open(this.href);return false;

Good luck.
Tom in KS
100 Mile Club-#57
http://ksnogas.blogspot.com/
Try reading a book, it's a novel experience
MY 2012 - Cayenne Red-55,000+ miles

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dgpcolorado
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Location: The Western Slope, Colorado

Re: 100% trickle charge gets me 67 miles. Day 3

Mon Sep 10, 2012 10:15 am

I'll echo those who suggest charging below 100% for those of us who head down steep hills from home. How much lower than 100% depends on how big the hill and how long the typical drive. For short trips, there is no reason to charge to more than 80% (Nissan says that charging to 80% is better for battery life than 100%). For long trips that might stretch the range of the car, charging past 80% might be necessary.

A lot depends on the details of your driving, but if you don't really need more than 80% I suggest just setting an end-time-only charge timer. You can set the time for when you plan to leave or even later if you don't need the full 80%. If you need more than 80% you could set the timer to end early in the morning then charge for an additional amount of time before leaving home using the timer override button. This is a lot easier to do with L2 charging than the very slow L1, so it may not work for you.

But, please don't charge to 100% before heading down hill. With a lower state of charge you will pick up some charge via regen on the way down. How much depends on your circumstances.

I'm about to head out on a 70 mile trip, involving 2500 feet of elevation change, which will take more than 80% to complete. I charged to 80% this morning via end-time-only timer and then just added an additional 45 minutes at L2 (it would take ~2.5X longer on L1). This will give me some regen going down hill but will leave me plenty of charge to make the long trip.

Good luck and enjoy your new LEAF!
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Mauileaf
Posts: 89
Joined: Sat Sep 08, 2012 10:47 am
Delivery Date: 06 Sep 2012

Re: 100% trickle charge gets me 67 miles. Day 3

Mon Sep 10, 2012 7:27 pm

First of all, thank you for all the replies. I will start to do the long life span battery mode to 80%. I did notice going downhills on 100% nothing was regenerating. Makes sense now.

I'm considering the level 2 upgrade for the charging station I was given with the LEAF from...Phil?

Any input on those and why I shouldn't shell out a grand for a home 240v kit? I rent and its already hooked up to have a second dryer outlet near the garage door.

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