Range vs Charge frequency

  • Thread starter Thread starter Quorn
  • Start date Start date
  • Replies Replies 33
  • Views Views 3K

Quorn

Member
The critical issue for most mini SE owners is charge frequency. My Mini SE achieves about 0.31 Kwh per mile which is close to the average for all EV's.
I plug in about once a week, after 9pm, and get to full charge by morning. Friends with hybrids plug in daily to maximize their electric usage.
From the literature it appears that Tesla has the best "mileage" at 0.24 Kwh per mile.
Of course if you use your Mini for long journeys stopping every 100 miles, and using public stations can be a pain, and requires planning.
Off-Peak Duke Energy charges 8.4 cents per Kwh or 2.6 cents per mile? As Ev's grow is use we should expect legislators to replace ICE road taxes, but until then happy motoring.
 
Wow. 0.31kWh/mile is particularly poor for the SE. That is 19.3kWh/100km, or a total range of 93 miles. You should be getting more like 12.5kWh/100km or a range of 143 miles. This is my average over almost 2 years of driving the SE. If you live in a very cold climate and have a long, freeway commute each day I could understand 19.3. The worst I ever got was 14.5 on a 200km trip at 110kph (70mph). I normally charge once a week, somewhere around 180-200km driven, with around 25% left. My SE never leaves sports mode. In Oz, we pay about 20c/kWh off peak, well at least I do. My solar panels get 55c/kWh during the day, so it makes more sense to charge at night.

So, charging 75% per week will use around 30kWh at the walll (charging losses, battery conditioning etc) at a cost of $6 (Australian). That works out to about 3c/km or 4.8c/mile. Several states are already trying to tax EVs by the km - it is quite unpopular here.
 
Hehe I was commenting to my sister that two weeks into ownership I’m “still having too much fun” and driving like a bit of a hoon (when and where it’s safe to do so), so my GOM has yet to guess more than 155 km of range from a full charge.
 
0.31kWh/mi or 3.226mi/kWh is rather poor efficiency unless that's for winter driving. It's also hard to tell from EPA numbers directly because different manufacturers may use a more favorable adjustment factor in lieu of default 70% indoor lab derate. Raising the factor to 75.6% would certainly increase your EPA numbers.

There will certainly be EV taxes but it would have to be done directly on DC Fast chargers and indirectly on peak demand charges for residential customers (similar to commercial/industrial plans already).
 
There will certainly be EV taxes but it would have to be done...
I'm from the government and I'm here to help. Soon, we will begin implementing mandated radio-mileage reporting for EVs. It will require us to mount a very small 6"x6"x6" box with a 6-foot whip antenna on the hood of your car. Would you like it on the left side of the hood or the right side? You may need to install a second 12-Volt battery to handle the box's continuous 2-Amp power drain. As a special bonus, there will be an LED visible on the back of the box to let you know when the box is reporting to the authorities that you've exceeded the speed limit. /s
 
Last edited:
We burg a video coming up where I compare a 400 mile road trip in the Mini vs a Tesla with side by side video footage.

Spoiler alert:
If neither car has to wait for a charger and gets to charge at their full speed, the Tesla makes the trip an hour quicker.
But for once per month type trips, the Mini is fine. That said… it is very dependent on the spacing of the chargers. Essentially, to avoid charging above 80% which kills your time, the chargers cannot be more than about 80 miles apart.
 
I'm from the government and I'm here to help. Soon, we will begin implementing mandated radio-mileage reporting for EVs. It will require us to mount a very small 6"x6"x6" box with a 6-foot whip antenna on the hood of your car. Would you like it on the left side of the hood or the right side? You may need to install a second 12-Volt battery to handle the box's continuous 2-Amp power drain. As a special bonus, there will be an LED visible on the back of the box to let you know when the box is reporting to the authorities that you've exceeded the speed limit. /s
Are we already in Communism or we still in transition ? I was there for 30 years and you don’t like it better we work on it before that crab happen here ,just wake up don’t live so comfortable that can happen suddenly and you will drive a bicycle not SE like in some of a countrys just jerrish what you can have here and enjoy living in a best country USA .Insightman if you government on this forum I’m not taking jokes like this easily just **** you to be easy on you ! Or you smoke something.Or I don’t understand your intentions.
 
Are we already in Communism or we still in transition ? I was there for 30 years and you don’t like it better we work on it before that crab happen here ,just wake up don’t live so comfortable that can happen suddenly and you will drive a bicycle not SE like in some of a countrys just jerrish what you can have here and enjoy living in a best country USA .Insightman if you government on this forum I’m not taking jokes like this easily just **** you to be easy on you ! Or you smoke something.Or I don’t understand your intentions.

He was totally joking.
 
We burg a video coming up where I compare a 400 mile road trip in the Mini vs a Tesla with side by side video footage.

Spoiler alert:
If neither car has to wait for a charger and gets to charge at their full speed, the Tesla makes the trip an hour quicker.
But for once per month type trips, the Mini is fine. That said… it is very dependent on the spacing of the chargers. Essentially, to avoid charging above 80% which kills your time, the chargers cannot be more than about 80 miles apart.

Those are pretty much the two extremes of EV traveling, and honestly that’s pretty close for an infrequent trip.

In this test, is the Tesla really charging at its top speed? Because that only happens up to about 25% SoC from what I understand. It would have to stop more frequently than the SE!


Sent from my iPhone using Inside EVs
 
Are we already in Communism or we still in transition ? I was there for 30 years and you don’t like it better we work on it before that crab happen here ,just wake up don’t live so comfortable that can happen suddenly and you will drive a bicycle not SE like in some of a countrys just jerrish what you can have here and enjoy living in a best country USA .Insightman if you government on this forum I’m not taking jokes like this easily just **** you to be easy on you ! Or you smoke something.Or I don’t understand your intentions.
@Rexsio, I apologize for distressing you. I should have written that I was being sarcastic instead of counting on the famous opening line, "I'm from the government and I'm here to help." and the "/s" at the end of my post to indicate I was joking. What I wrote was my reaction to anyone who thinks they can figure out in advance how the government is going make up for the fuel taxes EV drivers are avoiding.
 
The Tesla was not charging at its top speed due to the awkward placement of the Supercharger for the trip so the battery wasn’t as low as I would like and it was a V2 unit which is capable of only 150kW instead of 250kW. Being v2 it also shares power and the site was full and there was even a short wait.
So this is a comparison of best case Mini situation (plentiful CCs sites on the route) vs worst case Tesla situation.
But the Tesla still easily wins.
But the Mini trip was not burdensome so a city to city 400 mile round trip is perfectly fine:
 
The Tesla was not charging at its top speed due to the awkward placement of the Supercharger for the trip so the battery wasn’t as low as I would like and it was a V2 unit which is capable of only 150kW instead of 250kW. Being v2 it also shares power and the site was full and there was even a short wait.
So this is a comparison of best case Mini situation (plentiful CCs sites on the route) vs worst case Tesla situation.
But the Tesla still easily wins.
But the Mini trip was not burdensome so a city to city 400 mile round trip is perfectly fine:

Ah that explains why they weren’t closer to 2 hours apart.

I find the Mini’s capabilities tolerable. But I have been traveling in a Bolt for years so I am used to planning meals and such around stops. The Mini adds miles just as fast as the Bolt (before each’s respective taper). It’s just that the Bolt starts with almost 2.5x the range. But once you need to stop, it tapers at around 50%, so the second stop is still ideally less than 100 miles from the first.


Sent from my iPhone using Inside EVs
 
Yes that is the negative of the Bolt. In the real world it seems to have double the range but charges at the same rate so effectively the time spent at charge stops is the same, with the exception of that longer first leg which means it needs one less stop than the Mini. If the Bolt had a flat charge curve at 100kW as the Mini does at 50kW you could essentially have 30 minute stops from 10-80 which would be great.
The main issue for the Mini is spacing of chargers. If beyond 70% worth of battery the charge stops become annoyingly long for just that extra bit of range, and in some situations a trip is not possible or extremely tight. Going north from Dallas to Oklahoma City is no issue as Francis Energy places chargers 50 miles apart. But going south from Dallas to Houston leaves charging gaps up to 120 miles apart. Not good.
 
The charge curve is the dirty secret of EVs. I wish real values would be included in vehicle specs, because having 200 kW charging is meaningless if it's only close to that for 10% of the charge period.
The 697V Korean system has great charging before 50% SoC. Even ~115kW by 80% is excellent!

Nobody knows the longevity or degradation but it seems like a non-issue with high nickel chemistry.
 
@Rexsio, I apologize for distressing you. I should have written that I was being sarcastic instead of counting on the famous opening line, "I'm from the government and I'm here to help." and the "/s" at the end of my post to indicate I was joking. What I wrote was my reaction to anyone who thinks they can figure out in advance how the government is going make up for the fuel taxes EV drivers are avoiding.
I’m sorry I jump at your comments but as living here for 40 years my English is still my second language and that’s what happens I still don’t understand all nuances of English language.I was taking as direct what worlds are mean .
 
@Rexsio, I apologize for distressing you. I should have written that I was being sarcastic instead of counting on the famous opening line, "I'm from the government and I'm here to help." and the "/s" at the end of my post to indicate I was joking. What I wrote was my reaction to anyone who thinks they can figure out in advance how the government is going make up for the fuel taxes EV drivers are avoiding.
I was so intrigued with those words You quoted and finally I figured out this was a quotation of my favorite President Regan when he said those 9 worlds are the most dangerous worlds in English language .President aloud me to emigrate and live in USA legally since day first.
 
Didn’t intend to check if I had so-called “range anxiety” today, but went for a drive across the border. I’d already done the regular, mostly-back-highways route that is effectively 55 miles each way, and I still had plenty of charge leftover. Today I left home with a full charge, and did the outbound trip the usual way — back highways through small towns, arriving at my US PO box with about 63% left — but the way home would lead me straight into suburban rush hour freeway traffic the Friday of a long weekend. Instead, about 30 miles from home I turned onto the ring road freeway that added about 18 miles to the trip home, but avoided what Google Maps was showing as a 40-minute delay on the suburban freeway stretch the usual way. I used Google Maps to show me the exact distance to go, and using the “2 km/%” axiom, reckoned it would be quite close. Today’s excursion included mostly sane driving at or just above posted limits (with a couple of hammer drops to get around dump trucks and other hazards), but that last freeway segment I had to go traffic speed (75-80+ in a 62), or be a hazard. When I exited the freeway in my suburb with around four miles to go, I switched from Green back to Sport, and opened the windows and roof. Nevertheless, I pulled into the garage with 4% showing, and 206.3 km — 128.2 miles — for the trip. Throw your hands in the air and wave them around as if there are no repercussions.

A9434CA8-7E63-4BC7-94A8-46F8E12706A9.webp
D99BBC15-EDEE-4E63-8BAB-1FAA4EA83FEE.webp
 
Back
Top