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Ah, so it was a weekly shopping and school run car before you got it :)
 

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May aswell throw in some more data for anyone who is interested! Q90i, majority of charging is 22kW and 43kW. Battery never really topped to 100% except for immediately prior to longer journeys.

New in February 2018. April 2019 with 18,000 miles it's at 98% SOH
 

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Update (think I've posted here before).. R90 1st anniversary, SOH 98%, 11350 miles. Mostly charging at home on 7kW, usually charging to 100% overnight. Fewer than 20 rapid charges over the year.
 

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Haven't been driving the car long distances during winter but just done 1000 miles over the last month or so, and it has finally dropped to 96% at 19,439 miles. That last 1% was nearly 8500 miles. Rapid charging definitely around 85% of the time. The rest a mix of 22kw and three-pin plug.
 

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Ze Q90 i June 2017 Brand New:

Sept 2017 @ 101% @ 4,600 miles
Feb 2018 @ 100% @ 8,000 miles
April 2018 @ 99% @ 10,900 miles
June 2018 @ 98% @ 11,800 miles ( 1 Year Old )
July 2018 @ 98% @ 14,500 miles
Aug 2018 @ 97% @ 15,211 miles
Dec 2018 @ 97% @19,400 miles
Feb 2019 @ 96% @ 21,250 miles
April 2019 @ 96% @ 23,495 miles
June 2019 @ 95%@ 27,500 miles ( 2 years Old )
 

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Ze Q90 i June 2017 Brand New:

Sept 2017 @ 101% @ 4,600 miles
Feb 2018 @ 100% @ 8,000 miles
April 2018 @ 99% @ 10,900 miles
June 2018 @ 98% @ 11,800 miles ( 1 Year Old )
July 2018 @ 98% @ 14,500 miles
Aug 2018 @ 97% @ 15,211 miles
Dec 2018 @ 97% @19,400 miles
Feb 2019 @ 96% @ 21,250 miles
April 2019 @ 96% @ 23,495 miles
June 2019 @ 95%@ 27,500 miles ( 2 years Old )
Sept 2019 @ 95%@ 30,000 miles
 

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My Q90 is 2 years old at the end of the month. My charges are at least 85% rapid charging at EH chargers, and only granny charging at home. Looks like I am getting a similar SOH profile.

ZoeMileageSOH
29/09/2017​
0​
102​
11/02/2018​
3,800​
102​
12/03/2018​
3,800 (battery repaired)​
100​
06/06/2018​
6,300​
99​
08/07/2018​
8,036​
98​
15/08/2018​
11,000​
97​
22/09/2018​
12,542​
97​
23/11/2018​
16,854​
97​
16/12/2018​
17,601​
97​
13/04/2019​
19,439​
96​
19/08/2019​
22,740​
96​
04/09/2019​
23,000​
96​
 

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My Q90 is 2 years old at the end of the month. My charges are at least 85% rapid charging at EH chargers, and only granny charging at home. Looks like I am getting a similar SOH profile.

ZoeMileageSOH
29/09/2017​
0​
102​
11/02/2018​
3,800​
102​
12/03/2018​
3,800 (battery repaired)​
100​
06/06/2018​
6,300​
99​
08/07/2018​
8,036​
98​
15/08/2018​
11,000​
97​
22/09/2018​
12,542​
97​
23/11/2018​
16,854​
97​
16/12/2018​
17,601​
97​
13/04/2019​
19,439​
96​
19/08/2019​
22,740​
96​
04/09/2019​
23,000​
96​
My Charging lately is a Rapid once or twice a week , but mainly 7kw at home.
I don't use the car for work so it may sit for 2 or even 3 days but I always leave it at around 50% to 70% never higher.
 

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My rapids are four to five rapids over two days at the weekend on a 500 mile round trip, but rarely above 80%. When I granny charge at home I just let it max out at 100%. As I lease the battery I admit to abusing it a bit.......and I reckon that the battery will outlive the car. I reckon I'll be due a new battery at 75% SOH when I get to 150,000 miles.......as if.
 

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My car's (Q90) SOH just hit 95% at 2 years old and 23,300 miles. I'm beginning to wonder if the SOH is more age related as @dparr59 also hit 95% at 2 years old .....anyone got an opinion?

Also, i just granny charged it to 100% and the GOM read 10 miles more range than before, now reads 160 miles but was consistently reading 150 on previous 100% charges I normally reset the trip before charging so that I get a consistent estimate. I just checked the available energy on CanZE and it read 37.7 kwh.....that's up just over 1 kwh than it did on the previous 100% granny charge. Battery temps at the end of the charge were very similar with an average of 18c. I am not complaining but I'm curious to know why? Can @yoh-there or aynone else with battery behaviour experience can explain it?
 

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I don't consider myself an expert but I will try. TL;DR: don't read too much in it.

Yes, if you reset, all the "driving behavior" influence will be gone. But that still leaves a complex chemical device with only a bunch of wires attached that can do no more than voltage per cell reading, the temperature and the current in and out of the system. That is enough to fairly model the battery in the attached computer, but a model is not the same as the real thing.

Then, range is is modeled to the capacity (usually the Ah bit) of the battery, but especially if the battery has not been recently run close to flat, the computer had no way of calibrating the capacity of the pack to the voltage of the cells (the latter being a lousy indicator in absolute terms).

And then of course is the temperature as you mentioned. In certain temperature ranges the effect is quite dramatic, so "about the same" can easily explain a tip-over from 150 to 160.

All these things can add up (or even out ;) )
 

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My car's (Q90) SOH just hit 95% at 2 years old and 23,300 miles. I'm beginning to wonder if the SOH is more age related as @dparr59 also hit 95% at 2 years old .....anyone got an opinion?
My R90 is 2yrs 10months with just under 8k miles, but is still showing 99% SOH last I checked.

Always under the impression that mileage (and therefore charge cycles) was the most determinant factor of battery health?
 

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Always under the impression that mileage (and therefore charge cycles) was the most determinant factor of battery health?
A battery left charged at 100% but doing no miles is also bad for the battery - its basically a combination of temperature, usage (mileage), time left empty or full, amount of rapid charging and whether you live at an odd or even number*.

Cars with very few miles but always charged up to 100% after usage isn't great - the middle is best for a lithium battery hence people often don't charge to full unless going on a long journey but of course if your daily commute is at the full range then you need to charge fully, theres nothing you can do about it. The battery wont fall apart but will degrade faster.

*Statistically not yet proven.
 

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A battery left charged at 100% but doing no miles is also bad for the battery - its basically a combination of temperature, usage (mileage), time left empty or full, amount of rapid charging and whether you live at an odd or even number*.

Cars with very few miles but always charged up to 100% after usage isn't great - the middle is best for a lithium battery hence people often don't charge to full unless going on a long journey but of course if your daily commute is at the full range then you need to charge fully, theres nothing you can do about it. The battery wont fall apart but will degrade faster.

*Statistically not yet proven.
Yea.thats why I keep mine just between 30-70%. I rarely need more than 100miles for any journey so.

I live in number 7...take from that what you will :p
 
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