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 Post subject: Re: Real World Range
PostPosted: Wed Jan 11, 2017 2:33 pm 
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Joined: Fri May 01, 2015 5:52 am
Posts: 770
Location: KC,MO
DenverShaw wrote:
.... I do love it. ..... range shows at most 72 miles, .... This is with conservative driving, temps 60-75, and limited climate control. ....
I'm going to keep trying to improve the range, ....

Are you pushing the limits of 72 miles during your daily commutes?
If not, then why "keep trying to improve the range" and "pushing the limits"??? All that takes is driving slower.
Are you trying to pinch those expensive electrons?

It's a fast, fun car! Too bad you are not having fun with it.

I'm seeing a low of 58 miles on the ol' GOM during the 5° - 15° F weather we had a while back.
You don't see me turning down the climate control or fretting about 'using radio and DLR's'.
Plus, you don't see me slowing down one bit. I'm still in the left lane with all my 70-80 MPH buds.

Life too short to start pinching it now ! 8-)

(They say the reason the Prius got such a bad reputation as a slow car was because of that 'Instantaneous MPG' display and the penny pinching driving of some owners that stared at that display. It's not a slow car.)

EDIT, just to cheer things up!: :)
Doing a slightly longer commute in the summer using suburban and country roads, with only one stretch at 50 MPH, I'll see 94 miles on the ol' GOM.
Hang in there for Summer ! :mrgreen:
And calculate your time vs. pennies saved if you decide to drive slow.

_________________
Used '14 2LT w/ DCFC.
In the middle of the country.
Far from any of its sibs.


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 Post subject: Re: Real World Range
PostPosted: Sat May 06, 2017 10:02 am 
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Joined: Wed Dec 14, 2016 8:16 am
Posts: 2
NORTON wrote:
Are you pushing the limits of 72 miles during your daily commutes?
If not, then why "keep trying to improve the range" and "pushing the limits"??? All that takes is driving slower.
Are you trying to pinch those expensive electrons?

It's a fast, fun car! Too bad you are not having fun with it.

I'm seeing a low of 58 miles on the ol' GOM during the 5° - 15° F weather we had a while back.
You don't see me turning down the climate control or fretting about 'using radio and DLR's'.
Plus, you don't see me slowing down one bit. I'm still in the left lane with all my 70-80 MPH buds.

Life too short to start pinching it now ! 8-)

(They say the reason the Prius got such a bad reputation as a slow car was because of that 'Instantaneous MPG' display and the penny pinching driving of some owners that stared at that display. It's not a slow car.)

EDIT, just to cheer things up!: :)
Doing a slightly longer commute in the summer using suburban and country roads, with only one stretch at 50 MPH, I'll see 94 miles on the ol' GOM.
Hang in there for Summer ! :mrgreen:
And calculate your time vs. pennies saved if you decide to drive slow.


An update and response ;)

A couple more months of conservative driving now has me regularly seeing the GOM start at 82 - 86 miles, with the upper limit being as high as 113 miles. This was important for me to see because it confirms that my used Spark (and first electric car) does not have issues - especially with the battery. I still love the car!

As to whether I need the 82 miles, or if getting them cramps my lifestyle... I usually only drive ~40 miles in a day, but there have been days where I needed more than the car will offer with a heavy right foot. Where I live seldom requires climate control, so I'll use it when I need it, but that's not much of a factor. My driving habits don't affect my electric bill enough to raise eyebrows. More importantly, understanding the limits of both economy and performance in the Spark (and electric cars, in general) is of interest to me. I've had fast cars and I drove them fast, which was fun (and dangerous). With the Spark, believe it or not, I am finding a lot of satisfaction in squeezing more miles out of it, which has the added benefit of being safe, economical, and earth-friendly. That said, I am looking forward to owning a Model 3 for other pursuits 8-)


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 Post subject: Re: Real World Range
PostPosted: Wed May 10, 2017 3:06 pm 
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Joined: Wed Aug 13, 2014 7:33 am
Posts: 70
Location: Portland, OR
My 2014 Spark EV has recently been showing over 100 miles on the GOM now that the weather has gotten nicer and there's more daylight. So I decided to test it. I started off Monday charging at work on a Level 2. I didn't charge completely to full, but I suspect it was close. The indicator on the dash said that the charge would be complete at 1:15 pm, but I unplugged at around 12:50 pm. So I was near 100%. I drove the car on my usual commute which is about 40 miles round trip. On the way to work in the morning, I take the highway and have light to medium traffic and drive about 16 miles in 30 minutes. On the way home, I take the back roads. It takes about 40 minutes and is around 24 miles. Plus I run some errands here and there.

By the time I got back to work today, I had clocked in 83.4 miles. During lunch, I drove it around on surface streets to see how far it would go. I would estimate that overall, about 30 miles were highway miles, and the rest were not. The end result is that I drove 101.1 miles before driving back to the exact same charger that I charged on on Monday. The GOM said I had six miles left, with seven on the high end and four on the low end. I averaged 6.4 mi/kWh over the course of that trip. Not too shabby. So yes, 100+ miles is achievable in the spark. I've done it before, but what is more impressive to me now, is that the car is nearly three years old and has 32,275 miles on it. I don't know if there has been any battery degradation, but I certainly don't notice it if there is.

A bit more info. The weather has definitely been cooperative. It's been sunny and in the 60s and 70s over the last couple of days, so for the most part, I didn't use the A/C, heater, seat warmer or defroster. No rain either, so no windshield wipers. It's light enough in the mornings and evenings to not have to use the lights, and I turn them off as soon as I start up the car. I did turn on the fan a couple of times when it got warm on the way home, but only for a few minutes. Besides that, I make an effort to drive as efficiently as possible, without causing a safety issue or annoying my fellow commuters too much. No one has honked at me or tailgated me for a while, so I think I've got it down to where I can be efficient, without being a traffic hazard.


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 Post subject: Re: Real World Range
PostPosted: Thu May 11, 2017 5:02 am 
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Joined: Mon May 25, 2015 12:19 pm
Posts: 425
107 miles at 6.4 mi/kWh would require a battery of 16.7 kWh. I'd say the battery has degraded. If it still has ~19 kWh available, your range would be 122 miles.

6.4 mi/kWh is pretty good. I only get that when driving local. Even 55 MPH is only 5.4 mi/kWh.


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 Post subject: Re: Real World Range
PostPosted: Wed May 24, 2017 11:31 am 
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Joined: Wed Aug 13, 2014 7:33 am
Posts: 70
Location: Portland, OR
Hmm... Interesting way to think about it. I guess I've learned to be more efficient over time, and that has lead me to not notice the battery degradation. I guess at this rate, that will put me just shy of the warranty threshold in 8 years... Funny how that works!


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 Post subject: Re: Real World Range
PostPosted: Wed May 24, 2017 6:30 pm 
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Joined: Tue Sep 06, 2016 1:18 am
Posts: 89
SparkevBlogspot wrote:
107 miles at 6.4 mi/kWh would require a battery of 16.7 kWh. I'd say the battery has degraded. If it still has ~19 kWh available, your range would be 122 miles.

6.4 mi/kWh is pretty good. I only get that when driving local. Even 55 MPH is only 5.4 mi/kWh.



Don't use the "kWh average used", which isn't super accurate. Instead, fill up *completely* (enough to reset the "energy used since last full charge" screen - that you get to using the "LEAF" button under the display). Write down your exact mileage at that point. Pick a road that will allow you to drive without stopping or slowing down much (as much as possible). When you are 'close to' empty, pull over and look at the "energy used since last full charge" amount. Then use the "% charge remaining" to calculate an estimate of total usable battery capacity.

Example:

- You fill up completely (your charge is 100%, and leave on L2 or L1 charger for 20-30 minutes after 'full')

- You unplug and immediately get in the car, get on expressway and drive 78 miles, then pull into rest stop

- your "energy used since last fill" screen says that you have used 16.2 kWh since last full charge

- the "my chevrolet" (or On*Star) app tells you that you have an 8% charge left in the battery

Calculate :
* Since you have 8% left, you used 92% of the battery charge
* 16.2 / .92 = 17.6 kWh total battery capacity (estimate)

The reason that you want to avoid stopping or slowing down is that regen will affect 'total kWh used', and regen is not anywhere near 100% efficient, so it may 'blur' (i.e., not exact) the numbers somewhat.

Temperature DOES have an effect on capacity and efficiency of the batter. It would be best to do this all when temps are between 70-80 degrees F.


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