50 comments on “Battery Health Status”

1. Jeroen Meijer says:

   October 29, 2015 at 9:57 am

   May I suggest another keyword? A factor of importance might be the general cycle depth. My car for instance is always charged at night, but often runs only a few 10ths of kilometers a day. I would call that “shallow cycle”. People doing a 95 km one way commute every day, charging at work, I would call that a “deep cycle”. Word in the street is that deep cycles are a bit better for SOH.

   Reply
2. Sandy says:

   October 30, 2015 at 11:55 am

   Can the app show the next decimal place in a future release?

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   • Bob Fisch says:

     October 30, 2015 at 12:06 pm

     Sorry, there are no decimals available for this information.

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3. Alexandre Moleiro says:

   October 31, 2015 at 9:33 pm

   Using field “0x7bb, 80, 87, 2, 1, 0, 10, Bat SOH%3ld.%01ld, %, 0x2161, 0x6161, , 1, 0, 0\n” it is possible to get 0.5% precision, like 90.5 91.0 91.5, but no more than that.

   You can also compare health by Capacity in Ah, but it’s not Renault’s official measure for battery changes.

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4. stiloboy says:

   November 2, 2015 at 1:25 pm

   Cheers Alexandre, I was wondering if my battery was closer to 99% SOH because I can get really good mileage.

   One thing I have noticed with the software (while testing a 43kw post) is that it still says 1 phase even though its a 3 phase connection.

   I’ve already been able to evidence a brand of charger (evolt) which is held back to 17kw when charging on AC instead of (siemens comparable) 40.4kw (on an equally low SOC battery).

   Great software, keep up the great work.

   Reply
5. Jeroen Meijer says:

   November 3, 2015 at 11:08 am

   You can easily see if the charger is holding back or the car is. “Available charging power” is what the charger is stating as max. “Max battery charge/regen” is what the car can absorb given the SOC, temperature and maybe some other black magic. Some fast chargers, even wehn not load balancing with other cars being charged, have a nasty habit of starting low and then slowly “turning up the volume”. This is rather “not done” IMHO when you have to pay by the minute.

   Some people suggested to crowd-sticker chargers “checked by CanZe: xx kW”, hehe.

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6. Jeroen Meijer says:

   November 8, 2015 at 11:05 am

   AFAIK Tesla and Nissan state their capacities in rated kWh, while Renault is “too honest” and states usable. In all fairness, in the Tesla you can “emergency use” most of that excess with a manual override.

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7. STEN says:

   November 29, 2015 at 10:38 am

   Hallo Zusammen,
   hier die Beobachtungen zu meiner ZOE.
   Gekauft 06/2013.
   06/2013 0km 100% (Hoffentlich)
   07/2014 13400km 98% Renault Batteriereport
   12/2014 18800km 96% iCarsoft 907
   02/2015 21150km 96% iCarsoft 907
   04/2015 23960km 94% iCarsoft 907
   10/2015 31263km 92% iCarsoft 907
   Ich lade 1-2 mal pro Woche meist mit 22kW. Im Sommer lade ich mit 7kW
   wegen des Lärms der Klimaanalge zur Batteriekühlung. Der Wagen steht immer in einem offenen Carport.

   Reply
   • Jeroen Meijer says:

     November 29, 2015 at 11:28 am

     Thank you for your data Sten. Here is a tip: If you put your car in ECO mode before switching it off and then connect your charger, the fans will not kick in (or much, much later)

     Reply
8. seppele77 says:

   December 10, 2015 at 3:33 pm

   My data:
   ener73 2013.06 102 4-5 22 – 7,4 closed garage 62 Zoé

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   • Jeroen Meijer says:

     December 10, 2015 at 4:14 pm

     That is insanely good!

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     • seppele77 says:

       December 10, 2015 at 4:50 pm

       I have some doubts on this SOH value… Why many users have exactly 102 SOH ?? Is this value reliable?

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       • Jeroen Meijer says:

         December 12, 2015 at 1:52 pm

         You are completely free to have doubts. Feel free to cross check with an i907 or your dealer.

         Reply
         • Sandy Ritchie says:

           January 5, 2016 at 4:16 pm

           FYI iCarsoft 907 will set you back about £120 for Zoe. 😉 You guys should be at least token charging for your CanZe its that good.

         • Jeroen Meijer says:

           January 5, 2016 at 4:28 pm

           Thanks for the heads up and most appreciated 🙂 We have discussed this amongst us just a few days ago. While we most certainly do not dislike money, there is a feeling that for the probably relative minute amount that would come in, the risk of getting into an argument about it is simply not worth it. Maybe we will change our minds 😉

9. Grejazi says:

   February 12, 2016 at 6:39 pm

   For remark:

   Datas were taken after using the whole capacity-range of the battery for min. 3 times because of having some long runs to handle.

   When using only 50% of capacity-range for a longer time the datas for capacity is still smaller. I think the BMS can only calculate a correct capacity when discharging the battery down to warning because the discharging curve is not linear….

   Reply
10. THellweg says:

    February 13, 2016 at 1:33 pm

    Hello team,

    here are the current health states of our two Zoe cars.
    THellweg – 2014.08 – 94% – 5-7 – 22kW – open – 35tkm – Zoe (210white)
    THellweg – 2015.12 – 96% – 5-7 – 22kW – open – 11tkm – Zoe (210black)

    Remarks:
    The white car was ordered as a new car so its manufacturing date will not differ much from the purchase date.

    The black car was purchased in december 2015 with a mileage of 7tkm already driven – but it is a 2013.05 model.
    Here are the details:
    Before we bought it the car was used as a demonstartor and rental car (for customers) by the car dealer.
    It´s real fabrication date is 2013.05 (the problematic period) and indeed – serious charging problems occured after some time.
    Therefore the car dealer installed a new motor, a new charger, a new batterie and an new TCU in 2015.05.
    We were told that the displayed mileage of 7.4tkm is from the period 2015.05 until 2015.12 when we bought it.
    The batterie health was displayed with 98% in december until it decreased some days ago from 98% directly down to 96%!
    I drove 3.5tkm with it from the end of december till mid-february and charged 5-7 times/week with 22kW.
    This is the same mileage than before with the white one that is now driven (with fewer mileage, 1.2tkm/month) by my wife.
    I was surprised that the health state jumped down 2% at once and now I´m concerned that the health state will continue to decrease so rapidly. But most confusing of all for me is that I see a lot of cars in the list with more than 100% health state.
    Maybe this health state parameter is made of 50% “black magic” !?

    All the values are taken with CanZE.
    Thank you for this great software product!
    Cheers,
    Thomas

    Reply
11. Matthias Ostkamp says:

    March 29, 2016 at 7:44 pm

    Hi Jeroen and all team,
    thanks for the very useful app. I even bought a cheap Android tablet for it (and only it) and love using it on longer travels. I love especially the consumption screen. Now, since you’ve announced that Frédéric is building up CanZE for iOS I just can’t wait to have an early alpha installed and tested. The WiFi dongle is already on it’s way from China… 🙂

    Thanks,
    keep up the excellent work!
    Matthias

    Reply
    • Jeroen Meijer says:

      March 30, 2016 at 10:25 pm

      Thank you Matthias for the heads up.

      Reply
12. stiloboy says:

    May 18, 2016 at 11:52 am

    My pack dropped from 96% on 15th to 91% on 17th. 🙁

    Reply
    • JBS says:

      May 22, 2016 at 8:23 am

      Are you making frequent shallow charging ? (typically every night)

      Reply
      • stiloboy says:

        May 22, 2016 at 11:02 am

        Not really. I tend to charge twice a week, although it’s a full charge from low SOC.

        I’ve also go on long trips occasionally which may need 10 rapid charges.

        Having dropped to 91% it’s now recovered to 92% and seems to be staying there.

        Reply
13. JBS says:

    May 22, 2016 at 2:57 pm

    Rapid is 43 kW ? How many such long distance trips per year ?

    Seems the SOH estimate is not necessarily reliable: I’ve been reading of a test with 75% SOH and still 22 kWh available when actually making a trip (in spite of 17,5 kWh capacity announced).

    Reply
14. stiloboy says:

    May 22, 2016 at 6:12 pm

    Maybe only 2-3 a year, but as much as 500miles at constant 70mph (other than stopping for charge)

    My car now shows 21.6kwh but I just covered 122.6miles on a single charge and yet I used 23kwh (no charge top ups).

    My actual regen per charge now seems to have gone up a lot too. Used to be 1kwh per 22kwh but now more like 4kwh per charge as regen.

    Reply
15. Rémy says:

    September 5, 2016 at 1:11 pm

    The battery of my Fluence ZE which was at 84% SOH last year is now at 76%.

    It was 75% in july, but … I did not used the car for a dozen of day this summer and the SOH came up to 94% .
    It took three weeks and more than 500 km to go back from 94% to 76%.

    Reply
16. Lorenzo says:

    September 11, 2016 at 5:23 pm

    Hi to all,
    i’ve buy my Zoe in 10/2014. Now it’s 81% of SoH. It’s ever charged with a 22kw external charging station. In the winter the temperature drop below -10 celsius degree.
    Lorenzo

    Reply
17. Kay says:

    September 15, 2016 at 10:50 am

    Hi to all.

    I was doing a research on the Zoe.I am curious to know how you all are able to tell the Battery Health Status?

    Reply
    • Bob Fisch says:

      September 15, 2016 at 10:58 am

      Ehhhh … using CanZE of course 😉

      Reply
18. Bernd says:

    January 18, 2017 at 9:14 am

    I would like to add my data as well:

    Zoé (Q210 with 43 kW charger) purchased Dec. 2014; now 17500 km; typically charged in an open carport with 22 kW, 3-5 times a week.
    SOH Level is at 72% now.

    Ist the SOH Level critical (battery is coming to an end) or directly linked to the temperatures we have currently (-10 °C in southern Germany)?

    Reply
    • Bob Fisch says:

      January 18, 2017 at 7:22 pm

      You should check with your dealer to get it replaced. I think the limit for the SOH is 75%, so your below 😉

      Reply
19. Bernd Ziegler says:

    January 19, 2017 at 9:36 pm

    Thanks Bob,
    That’s what I already did. But the usual dealer can not help. I have to contact an authorised ZE station to verify the status. But the next one is not around the corner

    Reply
    • Bernd Ziegler says:

      May 19, 2017 at 5:45 am

      Hi Bob,
      Just to give a short update on what happened meanwhile.
      I came in contact with the next authorized ZE station (Bellemann, Speyer) and they performed very well. They confirmed the SOH value and managed the BMS update.
      Now, the SOH is 99% and I am enjoying 40 km more to drive.

      Thanks to you and the team for programming this nice CanZE tool.

      Greetings
      Bernd

      Reply
      • Francesc Signes says:

        June 1, 2017 at 8:59 pm

        Hello Berd. My question is, the BMS firmware could give you 40km more of track ? incredible. DO the EV dealer advise owners to update it? it is done on regular revisions ever year?

        Salute from spain
        Francesc

        Reply
20. Harm says:

    January 21, 2017 at 4:51 pm

    Hi Bob, I am making charts of this data. Is it possible to add the date when measured to this table?
    See: http://www.renaultforum.nl/forum/batterij-gezondheid-meten-t20004-275.html#p171137

    Many thanks, Harm.

    Reply
    • Bob Fisch says:

      January 21, 2017 at 4:55 pm

      Yes, I’ll do it right away, but I can’t say if I can track back all dates …

      Reply
      • Bob Fisch says:

        January 21, 2017 at 6:27 pm

        Ufff … I still had all the mails in the Trash, so getting the dates wasn’t that complicated.

        If you will see some “rule”, please inform us, so we can post it 😉

        Reply
        • Harm says:

          January 21, 2017 at 9:08 pm

          Great, thanks!

          Reply
21. Fidelio says:

    January 30, 2017 at 4:16 pm

    Hello, i would like to add my data, too. Although i´m not sure, if the SOH is correct (read with CanZE and Maxi Scan 902):

    P: 2013/3 SOH: 102% DM: 2017/01/30 CpW: 3-4 CP: 22kW CPlace: Open KM: 72 Car: Zoe (Q210)

    Reply
    • Bob Fisch says:

      January 30, 2017 at 6:50 pm

      The data is perfectly correct. 102% SOH means that your battery is top. In fact, I think batteries are being delivered with some kind of “extra space” …

      Reply
      • Fidelio says:

        January 30, 2017 at 8:49 pm

        I noticed something else, too: The indicated battery kilometers exceed the driven kilometers indicated by the car itself by over 10k km. Does this mean, my battery was used in another car before it was installed in mine?

        Reply
        • Bob Fisch says:

          January 30, 2017 at 9:17 pm

          Only Renault could tell you …. 😉

          Reply
22. Grejazi says:

    March 19, 2017 at 10:12 pm

    Grejazi – 2014.06 – 101 – 2017.03 – 7-21 – 2.3 & 3.7 – closed garage / carport – 40 – Fluence

    Battery health Status update at 40.004km Battery temperature 30°C – after some longruns with discharging down to less than 20% of capacity.
    In January at 37.000km SOH=98%.

    Reply
    • Bob Fisch says:

      March 20, 2017 at 5:44 am

      So, just to get it right: Your SOH did grow up from 98% to 101% ??

      Reply
      • Grejazi says:

        March 20, 2017 at 3:18 pm

        Yes. In january (37890km Battery Temp. 10°C) the calculated SOH was 98%. And actually in march (40004km Battery Temp. 30°C) the calculated SOH is 101%.

        Reply
23. Sandy says:

    May 3, 2017 at 1:49 pm

    I’m now down at 88% SOH with 26,000 miles on clock. But got car booked into dealer on 11th to see if the BMS update will restore lost health.

    Reply
24. Stephen says:

    May 6, 2017 at 8:52 pm

    Got my ZOE 2 months ago. SOH 80%. Just did a range test and achieved 181km. According trip report: Consumption 22kWh, saved: 2kWh = ca. 20kWh usable battery capacity

    Previous owner charged with most of the time with 2.3kWh, not known how often per week, the supposed data:
    evzone 2015.06 – 80 – 2017.05 – approx .3? – 2.3 – carport – 18 – ZOE

    The SOH seems somewhat low to me given the achieved range…and consumed kWh?

    Reply
25. Sandy says:

    May 9, 2017 at 9:21 pm

    Sandy here. SOH now showing 85% at 27k miles. Car is going into garage in 2 days for a hopeful BMS update.

    Reply
    • Francesc Signes says:

      June 3, 2017 at 12:07 pm

      Hello Sandy, any good news on BMS update? To all other users, do you advise a visit to garage for this?

      Reply
      • Jeroen Meijer says:

        June 13, 2017 at 10:05 am

        From what I heard (but I am not sure this correct) Renault informed it’s dealers that the update should be applied if AND ONLY IF:
        – balancing (99% to 100%) takes a very long time;
        – battery degradation seems extremely fast

        Reply
26. Sandy says:

    June 13, 2017 at 12:46 pm

    Not yet. I used a new dealer, they had car 9 days and didn’t do a darn thing.

    Going to a better one on 20th as they were recommended by folk who had a successful BMS update.

    So I’ll report back around the 22nd hopefully.

    Reply