These screenshots are slightly outdated, the app is frantically developed, so keeping this page par with the real app is quite a task.


One of the main pages display speed and consumption:


The settings page


Battery screen with a time-based graph for the SOC


Braking information


Charging information


Driving information


A screen displaying about the same information as Leaf Spy does.



24 comments on “Screenshots
  1. Daniel says:

    What means a state of health of 102%, mine is about 89%

    • Bob Fisch says:

      Each battery (not only these in the car) has a fixed “design capacity”. I think this is the capacity that the producer has to guarantee to his customers, so that the “real capacity” may be higher than that. For example the one I’ve build in my laptop has a “design capacity” of 14000mAh but it reads actually 14190mAh.
      If your battery health state has dropped below 100%, this means that it has no longer it’s full capacity. This may be due to weather conditions, fast charging sessions …. Until now I have charged my Zoé for 99% of the time at 3.7kWh, which is the recommended minimum. Maybe that is the cause of the good health state of my car 😉

    • Oleksandr Sharov says:

      how to see Car odometer data ?

  2. Jeroen Meijer says:

    Maybe I can expand a bit on that. With CanZE and i907 now “in the wild” a lot of people are keeping a keen eye on this number, especially as below 75% you are entitled to some sort of upgrading as stated in your rent contract. The different heath percentages in the wild vary quite a bit. Mine for instance, is 91% (she is 2 years old, is mainly charged at 16A/single phase too, like Bob’s). Some people have noticed that driving larger cycles (read, not charge when it is not needed for your next trip) improves battery health. I am not vowing for this, but it would be worth a “crowd experiment”.

    Extremely high and low temperatures have a bad influence on battery health. I believe personally that when temperature goes down it is not so much capacity going down, but stress goes up using the far ends of capacity (totally full, totally empty)

    Health % can go UP BTW. I have seen mine on 89%.

  3. Manfred Alfaré says:


    Want to give some feed back (to make CanZE even better)
    State of Health: doesn’t change very fast, so it need not be shown so prominent.
    Cell Voltages: are one single value for each cell, points should not be connected by lines, but shown as bar graph (vertical lines). Display of highest and lowest voltage and and the related cells would be very awesome
    “Comportiment” Temperatures: shouldn’t it read “compartment”? Same here: independent values should be bar graphs not lined up points.
    Charging info: some values would be nice to see as a course over time.
    Driving info: same as above. Dist. availabe at dest: It takes less time to get this by mental calculation then type it in my tablet, and I need not to take my hands from the steering wheel.
    Braking info: would be nice as diagrams.

    And of course: all diagrams should be able to save in files, with exact time and date on x-axis. X-mas is not so far away any more 😉

    • Bob Fisch says:

      So many ideas, so less time … but of course you are right. 🙂

    • Bob Fisch says:

      Cell Voltages: A bar graph with 96 does no longer express what users what to see! The goal of this graph is to check that all cells have more or less the same voltage. With a bar graph, this information is no longer visible. For that reason I will not change it.

      Compartment Temperatures: OK for the typo 😉 and the bar graph too. Does not change that much in visualizing things, but yes, you are right about the fact that they are independent.

      Charging info: time based graphics are planned and will certainly be added later.

  4. Hi Bob!

    Cell Voltages: I think, the expected information can be seen very well, especially when the 96 thin vertical lines do not start from 0 Volt but from 3 or whatever the lowest voltage could be (voltage of the lowest cell minus 0.2 Volts?)

    A friend of mine drives a Mitsubishi i-Miev and uses caniOn ( It looks nice and I think it took a long time, to have it look like it does now, but they also started with the first step. And they had very good sources for the data on can-bus.


    • Bob Fisch says:

      Very nice that app! Thanks for the inspiring ling 🙂
      They use some other approach, but as our ELM driver is getting faster, we could probably go that way too, so let’s go to the playground… 😛

  5. Jeroen Meijer says:

    Driving distance: thanks for the suggestion, and good for you, don’t use it 🙂 The function was added by request and it is not cluttering in any way if you don’t use it. Apart from that I totally disagree. Example: I was driving to an appointment over half the range away and had entered my D2D. While driving past the last convenient fast charger one look told me the distance to destination was less than the distance available at destination. Hooray, no problem. I won’t change this

    Braking info: The goal of this screen is to learn to avoid friction braking. I see no use for a timed graph. Apart from that, we need to learn more about the braking system so some other changes are probably due.

    One kind request: Add bug and feature request in the github feature tracker please, one by one. This way we can easily assign them and you are automatically updated when an issue’s status changes.

  6. Wolfgang says:

    is there any chance to read the RDKS idenifiers with this app? Changing for winter to summer wheel always needs a stop at the Renault dealer to teach in the new tire sensors (…not for less!).

    If I will have the IDs of the sensors, i will order some programmable sensors and clone…

    Thanks for your help in advance!


  7. Adam says:

    Can CanZE also display battery temperature? Thanks

  8. toto says:

    In V1.25, page 2, Charge,vehicule total consumption (kwh) has disapear !

  9. Jeroen Meijer says:

    That is correct. While documented like that, the field was not giving out proper data.

  10. Heinz D says:

    Have a new Z.E.40 – does the Bat Voltage heatmap disply te correct values for the big battery ?
    My canZE showns values liek N.A. -0,2fvolts – 3,7Vand 40 volts…..which is very starnge to me…

    • Jeroen Meijer says:

      No, this is not normal. In theory, there might be an issue with newer software in the car computers but that seems very unlikely. I am more afraid this is the problem. As soon as I find some time I will investigate. If you can state what type of dongle you bought and when you bought it, that might help us a bit.

  11. Fernando Pedichini says:

    Dear Bob, thank you for the development of CanZe, I installed it on my tablet and mobile last week after the purchase of an OBD Bluetooth interface. It is working fine helping me in the use of the ZOE during long travels. I see a menu item in the setting about the logging of data, could you please better explain how does it work and where is saved the log file on the tablet or mobile.
    All the best

    • Bob Fisch says:

      there is actually a raw logging of data onto SD card. Finer logging was prepared, but never implemented so far …

      • Fernando Pedichini says:

        Ok thank you, my laptop doesn’t have an external sd card so I ask if the file will be saved anywhere, or at least what is the name to look for..

  12. MaxPiw says:

    I’m a University researcher.
    My department has bought a Zoe R110-41kWh a few days ago, and I immediately ordered a KONNWEI902 dongle, that hasn’t arrived yet.

    For research purposes the following is of the utmost importance:
    1. to be able see log files after trips
    2. to have (in the saved file after a trip) battery voltage trend over time
    3. to have (in the saved file after a trip) battery current trend over time.

    Some explanation of these three points.

    1. From latest comment by Bob (August, 23) it seems that this is not available by far, isn’t it? For me, any readable format is acceptable; probably the easiest way is a csv file saved on the bluetooth-connected device (e.g. a phone)
    2. I see that one already can have a look at individual cell voltages (battery screen). It seems that also the total voltage is available: on the Spy-Leaf like dashboard screenshot I see the “requested voltage”, along with “battery voltage” .The latter is zero, the former is a reasonable number. Therefore I expect that what is shown as “requested voltage” is indeed battery voltage, while what is shown as “battery voltage” is nothing. Any comments?
    3. From the Spy-Leaf like dashboard I see both “requested current” and “battery current”. I don’t know whether “requested current” refers to the battery or the motor. If it refers to the battery, I suppose that “requested current” is actually current and “battery current” is nothing useful. The story is totally different in case “requested current” refers to motor.

    Bob, can you, please, comment on these three points?
    In case of need, my Department could evaluate funding the necessary development to solve these three points. We may accept that the resulting software is made available to anyone.

    • Bob Fisch says:

      I should be not big work for anyone who already did some Android development to write a simple app, based on CanZE, that requests periodically the needed fields and stores the values inside a file.

      A better logging function was requested to be integrated into CanZE and i even started, but unfortunately I ran out of time and dropped it later on :-/ Maybe I should retake a look at it, but no spare time right now too 🙁

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