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100% range

MarimbaKing

New Member
Oct 11, 2019
3
0
Ørnes
Charged my «new» Tesla to 100% for the first time today because of a longer trip. Surprised of the limited range compared to 80%.

Wondering if it’s normal to have 340km at 80% and only 375 at 100%? In my head 10% should be around 30km, meaning I miss about the same.
 

ericem

Member
Feb 26, 2019
52
28
Canada
Same deal with my 90D X with 130k km in Canada barely have 75 useable kw showing only 380 at 100%. Very disappointed. Might as well got a 75d instead saved the money
 

MXn00b

Member
Sep 15, 2018
50
16
NM
How did you do in actual Wh/mi on your trip? The estimate takes into account not being able to regen a full battery, so if you get right on the highway, I'd expect actual mileage would be better. There might be other factors limiting the Wh/mi on the top end. YMMV.

The estimate also gets better the more you drive.
 

ajdelange

Active Member
Dec 10, 2018
1,077
540
Virginia/Quebec
First suggestion is that you immediately get TeslaFi or a similar subscription (yes there is a cost) which will log charging and drive data for you and presents it in useful ways.

When one throws out km or miles to quantify charge levels confusion often arises because the car's estimated range is its estimated available battery energy divided by its estimated kWh required to go one km or one mile and there are several flavors of that latter number. One is the rated consumption and others are based on observed consumption. TeslaFi graphs fully charged range in terms of the rated consumption. If rated range at 80% is 340 km then full rated range should be 425. Be sure you are comparing rated to rated and not rated to average or instantaneous. All these are available on various displays. The latter depend on your driving habits and driving conditions.

You have a new car and it may take a while for your BMS to sort things out. It has quite a difficult job to do in learning the characteristics of your batter and in determining how to manage it.
 

ajdelange

Active Member
Dec 10, 2018
1,077
540
Virginia/Quebec
How did you do in actual Wh/mi on your trip? The estimate takes into account not being able to regen a full battery, so if you get right on the highway, I'd expect actual mileage would be better.
I think this may be an example of the apples to oranges comparisons I was talking about. The rated range has nothing to do with whether regen is used or not. It is obtained by dividing the car's estimated energy capacity by a fixed number derived from the EPA rating. The displayed Wh/mi is obtained by dividing the watt hours consumed by the distance driven. There are lots of Wh/mi numbers available including instantaneous, 5, 10 or 30 mile averages, since the start of this trip, since the last charge and since the resets of the two trip OD's. Ranges estimated from these can vary all over the place and, of course, regen is counted here. My best Wh/mi reading to date is -146 obtained on a short trip in hilly country. My range based on that is, of course, infinite whatever level my battery is charged to.
 

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