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Just to add to this issue - i've seen this before. The "gearbox" has 2 sensors, both have to agree for the car to be happy to drive. The sensors tell the car what gear it is in, if they differ then you get these kind of issues. First try can be to lubricate the mechanism by the gearbox, if...

Hi, I notice your screenshot is at 85% charge - does it have the same voltage as other cells when the battery is fully charged, or is that as far as it will charge up? Looks like the cell is faulty, these cells are hard to get hold of, your only option is usually salvaging them from a dead...

Hi yes they are 50AH cells. Seems like you've got a dead cell, although the screenshots from Canion and MUT dont really match up, plus you have the fault code for Voltage Sensor. Drop the pack out, test each cell with a multimeter, see if any are actually low. If they are, you'll need...

Hi there, I've fixed the fluctuating voltage issue (caused by failed chip in the battery pack) on my i-miev and from looking at your pictures it is pretty certain that you have a cell which has a low capacity compared to the others. The next task would be to remove the main drive battery and...

Sorry my cells are still not here, i'm relying on a favour to get them shipped 400 miles for free, so basically have to wait until the guy is close to me to get them ! Hoping for soon. Thanks.

Hi, Sounds reasonable - the battery pack is fairly tall so I ended up with blocks under the wheels - 12" high both sides, still the pack could not slide out, had to put another couple of inches under the wheels one side to get it out so you may need blocks to put the axle stands on, but see how...

Well it depends where you have the steering wheel ! But CMU10 was as per the diagram, so if you sit in the car, it was front right but not the end one, one in from that one (if that makes sense). I jacked the car up around 14 inches, supported it on concrete blocks, then i was able to get...

Hi, It will not go to ready without the big orange cables connected but all you need is to run diagnostics to check if you have identified the correct CMU. So in total it has these connections on the battery pack: - 2 twin plugs at the front, these power the heater and air con - 2 sets of...

Since it is likely you cannot see the failure (for me the chip looked fine but did not work properly) If you want to confirm that you have the correct battery module, just disconnect the little communications connector, then reconnect the battery pack multi plugs and check the battery voltages...

Hi, Your videos show exactly the same issue as I had, where voltages jumped up and down, mine was also CMU10. I would not buy a replacement CMU, instead fix the one you have like I did, otherwise you may find that the board you buy will not communicate with the BMU, it may not really be number...

** Just realised this is a really old thread - note to anyone else reading!! ** Hi, i just fixed the same issue on my i-miev. It is failure of the voltage monitoring chip on one CMU, the board in one of the battery modules. Mine was also pack 10, so it seems these pack 10 chips like to...

Oh and i've got a dual 10A RC charger and a separate 10A discharge capacity tester, so in ~5 hours I can do 1 full charge, 1 full discharge and a storage charge (50% charge once they have been tested).

I will charge to 4.1v and then discharge to 3v. The Yuasa spec sheets show that they test between 2.75-4.1v but there is very little below 3v. That should give me a good idea if the cells are usable in a car. I removed, fixed and replaced my battery pack on the drive without a hoist - its...

Hi, Will do, they still havent arrived ! Its a (very) long story but i'm hoping they will be here in the next 2 weeks, after which i'll test the cells to see what the capacity is. I have to say I am still very tempted to build a replacement cell out of 18650's - I can't see anyone has done it...

I wouldn't see any issue using LEV50N as a replacement for LEV50 if that is what you can find. Testing the replacement cells first is a must though as its quite a bit of work taking the pack out. Testing can be done with a fairly high power RC charger, or any decent RC charger and a separate...

Hi, That is an interesting component - if that were a 16Kwh battery pack then the circuit board in that location is a ground fault indicator circuit. I'm not totally sure if it does the same job in a 14.5Kwh battery pack as it looks a bit different but most likely it is the same thing. it is...

Sent you a PM regarding transport ;-)

If anyone is in need, i will shortly have some i-miev cells available. Just waiting for delivery of an 8-cell module and all i need from it is a component from the circuit board on top of the pack. Thanks.

Hi, Were the batteries actually 0v or did they actually have charge but the CMU (circuit board on the battery module) reported 0v to the battery ECU? Some people have had issues with the voltage monitoring chip on the CMU, and have had this replaced with a new chip. Thanks, Gary.

Hi, What circuit board is it that needs repairing? I'd recommend talking to these guys, very knowledgeable on the imiev/ion/c-zero and they have repaired circuit boards in the past. OVS Hybrid and Electric Car Repairs (they are on Google or Facebook) Thanks, Gary.