Search results

Mitsubishi i-MiEV Forum

Help Support Mitsubishi i-MiEV Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
  1. C

    Battery Capacity Testing

    Hi MickeyS70 Very interesting, You have probably written this in another post. However could please give the build date of the car and the odometer reading plus the average air temperature where you are. Here are VIN decoders that give the exact date the car left the factory...
  2. C

    Battery Capacity Testing

    Hi kirq4e This post may interest you. https://myimiev.com/forum/viewtopic.php?p=46120#p46120 It is about the iMiev/iOn/CZero battery capacity measurement/computation built in to the BMU. It is fairly detailed but the simple message is that the BMU computes a capacity based on km driven and...
  3. C

    Battery Capacity and Computed SoC OBDZero BMU PID 762

    This diagram of the Battery Management Unit (BMU) from the iMiev Technical Information Manuel outlines the iMiev method of measuring the present fully charged capacity (just capacity from now on) of the car’s battery as reported in PID 762. This method also applies to the iOn and CZero cars...
  4. C

    Decyphering iMiEV and iON CAR-CAN message data

    The VIN number is coded in the 6FA PID 6FA: byte(1) = 0 Char(i-1) = ASCII(byte(i-1)) VIN first 7 characters 6FA: byte(1) = 1 Char(i-1) = ASCII(byte(i-1)) VIN last 7 characters
  5. C

    Battery Capacity and Computed SoC OBDZero BMU PID 762

    Thanks kiev. Before reading this I didn't know that there was anything other than the CAN bus. So I dug into the service manual and found this: LIN network CAN network Which you probably have seen already. This seems to show that the BMU and the MUTIII are both connected via the CAN bus...
  6. C

    Battery Capacity and Computed SoC OBDZero BMU PID 762

    I think I can now show this to be true. This graph shows the 10 min pause in slow charging from the same session shown in the post above. The purpose of this pause is to measure the true SoC of the battery based on the 0 load battery voltage. Note that SoC1, the green line, hops up and down...
  7. C

    Battery Capacity and Computed SoC OBDZero BMU PID 762

    I found the forum post containing the original Amps formula that I used early on in OBDZero: https://myimiev.com/forum/viewtopic.php?p=4805#p4805
  8. C

    Battery Capacity and Computed SoC OBDZero BMU PID 762

    Computing the Amps to and from the Battery This graph shows a slow charging of the battery recorded a couple of months ago. The green line is the BMU’s present charge in amp hours (AhBMU) using data from PID 762. The red (AhCal) and blue (AhOrg) dotted lines are computed present charges in Ah...
  9. C

    Battery Capacity and Computed SoC OBDZero BMU PID 762

    Thanks kiev. Yes the PID must be requested. Please see this post in deciphering messages for more details. https://myimiev.com/forum/viewtopic.php?p=45879#p45879 David
  10. C

    Battery Capacity and Computed SoC OBDZero BMU PID 762

    Thanks Joe David
  11. C

    Battery Capacity and Computed SoC OBDZero BMU PID 762

    On March 13, 2023 I updated OBDZero to version 4.00. In this version there are 4 new screens: The Ah screen is of particular interest because both the capacity and the present charge come from the BMU PID 762. The capacity is the same as that reported by CaniOn and EvBatMon. The present...
  12. C

    Decyphering iMiEV and iON CAR-CAN message data

    This BMU 100% battery capacity was supplied by anko on https://www.myoutlanderphev.com/forum/viewtopic.php?f=10&t=1796 It is the capacity shown by CaniOn, EvBatMon, HobDrive and now by OBDZero. The second data, present charge in Ah, is as far as I know new. These are the commands to the...
  13. C

    Decyphering iMiEV and iON CAR-CAN message data

    Thanks for the suggestion. I will try it.
  14. C

    Regenerative Braking Not Working?

    This is the right way to go. On the German forum: https://www.goingelectric.de/forum/viewtopic.php?f=222&t=23324&start=330 There are 3 reports of battery replacement (Batterietausch). In each case the new battery had more than 42Ah capacity. Not the 17 Ah shown in the screenshot.
  15. C

    Regenerative Braking Not Working?

    OBDZero saves data in semicolon separated text files in the OBDZero folder on your device. These files can be opened in Notepad and Excel. There are instructions for this in the user manual: https://obdzero.dk/wp-content/uploads/2022/08/OBDZeroUserManual38.pdf If you can download the files to...
  16. C

    Losing Charge When Parked Up

    Thanks to miggols99 for sending the data from the trip shown above. First of all, changes in SoC2 when starting the car after an idle period do occur. However, they are not common. I have found about 10 instances in about 400 hours of data collected from my CZero. SoC2 is the SoC shown in the...
  17. C

    Battery capacity got reset after changing aux battery

    That must be irritating. And your right it is 30% and not 20%
  18. C

    Losing Charge When Parked Up

    I was quoted twice that by the local Citroen dealership. I'm wondering how much it would cost to ship a battery from Japan to Denmark. However I only payed the Japanese price for a new battery, for my car. So I'm just curious.
  19. C

    Battery capacity got reset after changing aux battery

    The recalibration process may also work if the SoC% is less than 70. Say 60% to be sure. The important thing is that the BMU pauses slow charging for about 10 min. The BMU uses this pause to measure the true SoC% of the battery based on the battery voltage at low current. On my CZero 2011 the...
  20. C

    Hypermiling the i-MiEV

    Many thanks JoeS for reopening this topic. As you point out there are two factors that determine how far you can drive, the RR and the speed. The car tells us the RR but it doesn’t tell us at what speed that range can be driven. If you drive at a constant speed in the same direction on a level...
Back
Top