mrradon
Posts: 84
Joined: Sun Apr 22, 2012 11:35 am
Delivery Date: 08 Jun 2012

How to Calculate Range with elevation

Mon May 14, 2012 3:55 pm

This winter I noticed that Steven's Pass ski area has (2) Level 2 charing stations. How do I calculate/figure out if the Leaf can make this trip? (about 64 miles one way)
Thrasher's corner, Lynnwood, WA TO Steven's Pass Ski Area

The elevation change is about 4,000'.
10.125KW Netmeter System, (3) 15 panel arrays
(45) REC225PE-US + (45) M190-72-240-S12
SolarMount I Racking
2012 Leaf, Ocean Blue - 32,800 11 bars

User avatar
UkrainianKozak
Posts: 355
Joined: Thu May 12, 2011 2:53 pm
Delivery Date: 12 May 2011
Leaf Number: 001065
Location: Redmond, WA

Re: How to Calculate Range with elevation

Mon May 14, 2012 4:08 pm

It's kind of tricky, and result might vary greatly depending on traffic on highway 2 and how you drive...
The best way is to try...
The good news is, there's more chargers on Highway 2, including fast DC chargers! We should be able to drive to Wenatchee and beyond!

Check out this post: viewtopic.php?f=24&t=620&start=1190#p197463
Leaf SL-e
Redmond, WA

41 000 electric miles and counting...

bigtlb
Posts: 115
Joined: Tue Aug 03, 2010 7:56 am
Delivery Date: 14 Oct 2011
Location: Chicago, IL

Re: How to Calculate Range with elevation

Mon May 14, 2012 4:34 pm

A best case scenario would be to calculate the change in potential energy, and subtract that from your capacity. This, would of course be assuming 100% efficiency. But would give you a starting point.

If there are several ups and downs, they should probably be calculated separately with the negative downhill delta being multiplied by .80 (or whatever regen efficiency you want to estimate) then summed.

So for 4000' (1220 meters) and a car with a curb weight of 1520 kg (plus a passenger of say 100 kg) this would be.

1220 m * 9.8 (m/s^2) * 1620 kg = 1.94 x 10^7 joules

There are 3.6 x 10^6 joule per kwh, so at least 5.29 kwh must be consumed to lift the car and a 100kg (220lb) passenger 4000'.

Assuming 21 kwh usable this means 1/4 of your range. If you think you can get 100 miles out of 100% charge on flat stretches and at that speed, then do it. Personally I haven't been able to get much better than about 85 miles - so I wouldn't try it without a fall back charge somewhere along the way.

Your mileage may vary. :D :geek:
2012 Nissan Leaf SL
Delivered: 12/28/11
EVSE: 10/24/2011 (AeroVironment)

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TonyWilliams
Posts: 10090
Joined: Sat Feb 19, 2011 1:48 am
Location: San Diego
Contact: Website

Re: How to Calculate Range with elevation

Mon May 14, 2012 4:39 pm

Have you tried the LEAF Energy app foriPhone/iPad from the Apple store ?

viewtopic.php?p=101293#p101293

mrradon
Posts: 84
Joined: Sun Apr 22, 2012 11:35 am
Delivery Date: 08 Jun 2012

Re: How to Calculate Range with elevation

Mon May 14, 2012 6:13 pm

TonyWilliams wrote:Have you tried the LEAF Energy app foriPhone/iPad from the Apple store ?

viewtopic.php?p=101293#p101293

Awesome link, that was what I was looking for. I saw it somewhere but searches turned up nothing.

I'm still a Luddite, just a cell phone (StarTAC) without any ability to text. I love it that way.

Instead of APPS, how about a google plug in for Google Earth or there Map? Hum...
10.125KW Netmeter System, (3) 15 panel arrays
(45) REC225PE-US + (45) M190-72-240-S12
SolarMount I Racking
2012 Leaf, Ocean Blue - 32,800 11 bars

Hong
Posts: 1
Joined: Sat Mar 30, 2019 8:43 am
Delivery Date: 30 Mar 2019
Leaf Number: 6697

Re: How to Calculate Range with elevation

Sat Mar 30, 2019 8:54 am

I believe bigtlb's estimate is fairly accurate based on my test:

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The easiest way to remember is: 1% battery consumption for every 100m elevation gain for a Leaf with a 40 KWH battery (e.g. my 2019 Nissan Leaf S).

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