Mileage from charging
- Thread starter ncerna
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MrDRMorgan
Well-known member
ncerna said:
The full-charge mileage appearing on your display depends on a number of things - heavy foot, weather, air temperature, headwinds, road speed, AC, heater, etc. My data for my 2014 Spark EV shows the range runs between 73 miles in the winter and 110 miles in the summer; my 2015 spark EV runs between 75 miles in the winter and 104 miles in the summer. Others have posted higher and lower numbers.
SparkevBlogspot
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Some guy did almost 140 miles. Theoretical limit is discussed in this blog post.
http://sparkev.blogspot.com/2016/03/range-polynomial.html
I typically see 100 to 110 miles on full charge, though it dropped to 90 in winter. Since I get about 5.3 mi/kWh on average over 20K miles and the battery now has about 17.75 kWh, it should be about 94 miles. It showed higher, because the times I charged to full may have been the times that I was driving in traffic.
In traffic, I get over 6 mi/kWh, so 17.75 kWh would result in 107 miles. One time in moderate traffic, I got 6.4 mi/kWh average over 80 miles, which would be 114 miles with 17.75 kWh.
http://sparkev.blogspot.com/2017/02/sparkev-is-most-efficient-car-in-world.html
Obviously, these figures are without AC, which I rarely use.
http://sparkev.blogspot.com/2016/03/range-polynomial.html
I typically see 100 to 110 miles on full charge, though it dropped to 90 in winter. Since I get about 5.3 mi/kWh on average over 20K miles and the battery now has about 17.75 kWh, it should be about 94 miles. It showed higher, because the times I charged to full may have been the times that I was driving in traffic.
In traffic, I get over 6 mi/kWh, so 17.75 kWh would result in 107 miles. One time in moderate traffic, I got 6.4 mi/kWh average over 80 miles, which would be 114 miles with 17.75 kWh.
http://sparkev.blogspot.com/2017/02/sparkev-is-most-efficient-car-in-world.html
Obviously, these figures are without AC, which I rarely use.
SparkE
Well-known member
I got 117 once. Generally 105-110 (best #s, not all the time).
The 117 was during the summer, AFTER I had spent the previous 5-8 miles driven on an expressway at about 40 mph, hitting almost all green lights (it was at 1 in the a.m.). So no stop-and-go, low air resistance, warm (but not hot) temp on battery. I seem to recall that my m/kWh was around 6 on that previous drive (figure shown when you turn off the vehicle, before you open the driver's door).
But I rarely fill up 'all the way' (once or maybe twice a month). I rarely need a full battery for my regular use, and I have heard that 100% SoC is not good for L-Ion chem batteries, so I generally fill up to about 80-85% SoC. I do a full charge once a month or so, just to make sure that the batteries do their 'full charge' balancing. Or I'll do a full charge if I know I am going to drive a long way that day: charge up to 90% the day/night before, and then a full charge in the a.m. before leaving so that I am not sitting at 100% SoC for hours and hours. (It takes less than an hour's charge to bring the battery up to 100% from 90%).
The 117 was during the summer, AFTER I had spent the previous 5-8 miles driven on an expressway at about 40 mph, hitting almost all green lights (it was at 1 in the a.m.). So no stop-and-go, low air resistance, warm (but not hot) temp on battery. I seem to recall that my m/kWh was around 6 on that previous drive (figure shown when you turn off the vehicle, before you open the driver's door).
But I rarely fill up 'all the way' (once or maybe twice a month). I rarely need a full battery for my regular use, and I have heard that 100% SoC is not good for L-Ion chem batteries, so I generally fill up to about 80-85% SoC. I do a full charge once a month or so, just to make sure that the batteries do their 'full charge' balancing. Or I'll do a full charge if I know I am going to drive a long way that day: charge up to 90% the day/night before, and then a full charge in the a.m. before leaving so that I am not sitting at 100% SoC for hours and hours. (It takes less than an hour's charge to bring the battery up to 100% from 90%).
ncerna said:
The number of miles showed by the Guess O Meter is based on your last few days of driving. Based on how many miles per kWh you got over the last few days, it will estimate how many miles you may get with the fully charged battery.
Assuming you have a battery with a usable capacity of 18kWh when fully charged, if you averaged 4.5 miles per kWh over the last 3/4 days, it would show 81 miles (4.5 x 18).
If You averaged 6.5 miles per kWh it would show 117 kWh (6.5 x 18).
So to know what is the Highest possible number you could ever see there, someone would have had to figure out what is the maximum miles per kWh achievable on the car (like driving at 20mph constant), then you multiply that by whatever is the current usable capacity of your battery.
The graph on the page linked in an earlier post seems to imply you could get as much as 7.2 miles / kWh.
If you would drive like that 4 days in a row, on a Spark EV with an 18kWh usable battery capacity, the Guess O Meter would show 130 miles of range (7.2 x 18).
Note: A New Spark EV Battery is believed to hold around 18.4kWh of usable capacity.
My 50k miles 2014 Spark is down to 16 kWh of usable capacity.
I'm looking at 2015 Spark with 56k miles and the range after full charge is only 48 miles. I don't know how it was driven before, but I am concerned if the battery is on low end of life?
bjleininger
Member
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Is it was fully charged at 48 miles the display would say "Fully Charged" not "Charge Cord Connected".
Spark e
Member
On a full charge, I was able to complete an 85 mile round trip with 6 miles remaining blinking.
Temps were in the low 70’s / high 60’s. Terrain was 1/2 flat, 1/2 hills. Made it home with no perceived power loss and promptly recharged.
Not bad at all considering the age and size of the battery. Based on its current range in the winter, I wouldn’t be surprised at all if I regularly got 100+ miles of range on a full charge in the summer.
Temps were in the low 70’s / high 60’s. Terrain was 1/2 flat, 1/2 hills. Made it home with no perceived power loss and promptly recharged.
Not bad at all considering the age and size of the battery. Based on its current range in the winter, I wouldn’t be surprised at all if I regularly got 100+ miles of range on a full charge in the summer.
High 60s F that's not winter lol Freezing temps degrade performance. Your temp is ideal as you don't have to use AC as in 90s F.
Spark e
Member
“winter” for Southern California
Spark e
Member
Averaging 100 miles today so far with temps around 64° F. Drove 44 miles mostly freeway averaging 67 mph, using 7.1 kWh for an average of 6.2 miles/kWh.
If all of the original 18.4 kWh were usable, potential range would be 114 miles, however today, more likely around 16.2 kWh based on estimated remaining range, for ~ 12% battery degradation after 9 years/71k miles. Well within the EV industry average.
If all of the original 18.4 kWh were usable, potential range would be 114 miles, however today, more likely around 16.2 kWh based on estimated remaining range, for ~ 12% battery degradation after 9 years/71k miles. Well within the EV industry average.
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You should grab an OBDII Bluetooth adapter and Torque to get more data from the battery. Sounds like yours is in excellent condition.
