I have not used a supercharger many times (maybe 6?), so I'm not as familiar with how fast the charge should occur. But the one time I charged to 95% for a long road trip, I seem to remember it taking as long to get from 85% to 95% as it did to get from 30% to 85%. I understand the charge rate is slower near the end of the charge cycle and why this is true. Just wondering HOW MUCH slower it "should" be. Thanks.
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The last 10% of charge at a Supercharger
- Thread starter RedXowner
- Start date
forkee
Member
It rarely makes sense to supercharge past 85% but if you live for instance I in the upper Midwest and supercharger locations aren't as dense as the coasts, it needs to happen sometimes.
jelloslug
Active Member
Often, you will get faster speeds by switching to a high current L2 for the last 10 to 15%.
Yinn
Active Member
My general rule of thumb on road trips.
If I have enough to get to the next supercharger with at least 20% remaining; it will take me less time to drive to that SC and charge back up to 80% than it will for me to charge that remaining 20%.
mspohr
Well-Known Member
That's the best road trip strategy. You only need to charge enough to get to the next Supercharger. Keep your state of charge low and you will charge faster. (If you have range anxiety, watch the power consumption graph. You can speed up or slow down to arrive at the SC with a low state of charge.)
SUP THO
Member
In my personal experience at my local SC rated at 72 kW max, 80% to 90% takes about 10-15 minutes. I have never charged to 100% before at an SC but this would assume 90% to 100% takes an hour+. Wow.
gavine
Petrol Head turned EV Enthusiast
You still might be better-off charging to 85% and just driving slower. You can save a lot of range by slowing down. I guess you would have to figure-out the average MPH charge rate from 85 to 100% and decide if slowing-down by that much is worth it in terms of total time. Then again, you may prefer to sit at a Supercharger amenity longer vs. driving slow.
Honestly part of my issue is no charging at destination so I need extra to spend a day or two and make it back to the supercharger. My preferred route is 55mph scenic route vs interstate.
An over 180 mile stretch in Wisconsin winter means I want some buffer, car is 220 miles at 90%, you get some single digits temps and precipitation........
Yinn
Active Member
here's a real world example. Charging from 8% to 98% on X LR+ (starting at 7:56, ending at 9:07):
And here's 8% to 100% that's not full 100%, but like 99.xxx% (because the charging was till continuing when I stopped it) - started at 2:59, ended at 4:28:
And here's 8% to 100% that's not full 100%, but like 99.xxx% (because the charging was till continuing when I stopped it) - started at 2:59, ended at 4:28:
mspohr
Well-Known Member
Graph shows that charging to 70% is ideal. After that, it tapers off. This is what I have observed with my 2015 Model S. If you can make it to the next Supercharger on 70%, most efficient to head out
it's more complicated than that since getting to another supercharger has time overhead of a detour.
So if a bit more time at the plug lets you skip a stop, it's absolutely worth it. That's why tools like ABRP are great - the help you calculate that to a big degree and try alternate routes.
gavine
Petrol Head turned EV Enthusiast
I have seen discussions where some people prefer to ride the bottom end of the battery and stop at every supercharger. This can make sense depending on the situation because of how much faster it charges at a low SOC.
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