Set the max battery state-of-charge

20778 Views 29 Replies 14 Participants Last post by dcdrive, Nov 10, 2020

mariopaol

Discussion Starter · Nov 19, 2018

Hi Forum,
do you know how to set the maximum state-of-charge of the battery ?

I have a Tesla since several years and it is a fundamental tool to avoid ageing of the battery (i.e., limit the max SOC to values below 100%).

Thanks !

Mario

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McRat

· #21 · Dec 1, 2018 (Edited)

Dantrium said:
If you run through the options on the instrument panel you will find the meter that gives you instantaneous energy consumption. I think it is listed as kWh/100 mike, but I cannot remember for sure. I’ll look the next time I drive

Thanks! I just played with that. It is a bit laggy, and the regen stops reporting at -99.9 kWh / 100 mi.
I'd really rather see kW flow directly, and from a software perspective, it's less code. But that's because I've been used to seeing that number since late 2012 almost daily.

I'm another person who think Miles per kWh rather than kWh per 100 miles makes more sense. I guess it's a Euro thing.
We use MPG for gas cars, and they use liters per 100km.

Tesla has no excuse for using kWh / 100 mi, or Watts per mile, or whatever. Elon Musk spent most of his life using MPG, as have most Americans. Why he wanted to go EuroStyle for fashion is totally beyond me since Tesla was one of the last companies to adopt the new Euro EV range method, WLTP. Not even sure if they have conformed yet.

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WattAJag

· #22 · Dec 1, 2018

We're getting around 0.350 KWh/mile (city @ 60 degrees F) - or about 2.9 miles per KWh. That would be around 265 miles for the usable 85 KWh we have.

Highway is closer to 0.52 KWh/mile (again, not in the cold) - or around 1.9 miles per KWh which is only 160 range.

I really don't understand the "per 100 mile" usage as you don't get enough "100 mile increments" per charge to neatly round. I don't see how it helps at all. I also don't understand using Wh/mile - as we don't think of the battery as 90000 Wh. KWh/Mile and using the decimal point or miles per KWh and knowing that it will likely always be something around 2 or 3 (and again with a decimal point) seems like the better units.

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phil

· #23 · Dec 2, 2018

epirali said:
Actually Tesla, an American company, is the only other one. Chevy and BMW and Nissan all use miles/KWHr

The only other what??

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phil

· #24 · Dec 2, 2018

McRat said:
Tesla has no excuse for using kWh / 100 mi, or Watts per mile, or whatever. Elon Musk spent most of his life using MPG, as have most Americans. Why he wanted to go EuroStyle for fashion is totally beyond me since Tesla was one of the last companies to adopt the new Euro EV range method, WLTP. Not even sure if they have conformed yet.

I suppose Jaguar does have an excuse, being English and all, but it would be trivial to accommodate the inverse metric for American customers, or any other customer who wants it.

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epirali

· #25 · Dec 2, 2018

phil said:
The only other what??

Sorry, only other car company I am aware of that uses KWHr/100 miles (only Tesla and JaguarJ. The German (BMW, Audi, VW), Japanese (NissanJ, and Chevy all use miles/KWHr.

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ecote

· #26 · Sep 10, 2020

mariopaol said:
Hi Forum,
do you know how to set the maximum state-of-charge of the battery ?

I have a Tesla since several years and it is a fundamental tool to avoid ageing of the battery (i.e., limit the max SOC to values below 100%).

Thanks !

Mario

Is there a mode to limit fast charging to 80% in the Jaguarr

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Ayepace

· #27 · Sep 11, 2020

WattCat Android phone app has the capability to set a SOC limit.

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EV-AL

· #28 · Oct 25, 2020

I had the same concern when I purchased my I-PACE in June/20. I had been trained to limit the charge when charging my MS.

LRJ's Stephen Boulter, Vehicle Engineering Senior Manager for Jaguar I-PACE made a statement about not being afraid to charge to the upper limit. He said this in response to a question asked toward the end of a one hour presentation to a group of Norwegians in Dec. 2019. You can see his presentation on the link below. He references the fear about the limit being tied to a different battery chemistry than that used in the IPACE. (BTW - I am still limiting my charge through my JuiceBox home charger.)

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Zap Cat

· #29 · Nov 6, 2020

I limit my charging to 80% (unless I'm getting ready to travel) by using the iPhone MyPace app. Works great. The app is not in the App Store yet. Search on this forum to get the info on how to get signed up via Testflight.

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dcdrive

· #30 · Nov 10, 2020

Ayepace said:
WattCat Android phone app has the capability to set a SOC limit.

TCU 16.2 is recommended; may be flaky otherwise

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