How to wire for Leaf Charging, charge curve, and battery temp

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alucas
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How to wire for Leaf Charging, charge curve, and battery temp

Post by alucas »

Hello All

I am looking for advice on connecting the zombiverter to my Leaf stack for charging. I have a gen3 system that is connected as is suggested on the leaf specific page https://openinverter.org/wiki/Leaf_stac ... ombiverter. I don't have the leaf BMS but instead have a IVT shunt. I am a bit confused with all the options and want to be sure I get this connected correctly.

I found the Control(CP) and Proximity lines coming from the PDM connector and I have found the CP and Proximity lines on the charge port. I also have the Proximity line from the zombiverter and have identified the option for CP spoofing on a PWM line. Now what do I do with all these.
I am assuming the PDM can control the CP and maybe the proximity, but I am not sure. My guess is that I need to connect the CP, and proximity from the PDM. But then what do I do with the zombiverter Proximity. Do I need the two resistors? Can I just connect the zombiverter Proximity, PDM proximity, and charge port proximity all together?

Next what controls the charge curve? If I have a IVT shunt for the overall battery voltage. How would the PDM know the current SoC? I am assuming the zombiverter has to look at the SoC and will then control the charge rate via the CAN bus on the PDM. I could go read the code but I thought I would start here and establish a record of this.

Finally I have a set of 5 dallas one wire temp sensors in my battery pack. I use a ESP 32 to reads them. It creates an and creates an average temp and displays all temps in a web page or via serial port. I would like to feed this back to the zombie. I was thinking of outputting the ave temp via a analog pin(DAC) and reading it back. Then I thought this is lots of work, maybe I should just figure out how to code an IO that I am not using on the zombie to read the temps. I could use one of the unused temp lines. Any thoughts on this?

Thanks
Aaron
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Re: How to wire for Leaf Charging, charge curve, and battery temp

Post by Bratitude »

The only wiring needed for the leaf stack to operate is what is on the wiki page.

Cp spoffing is for chargers like the outlander obc or some of the Tesla ones.

Zombie to leaf conections is only 12v, relay ign, and can. Thats it
https://bratindustries.net/ leaf motor couplers, adapter plates, custom drive train components
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Re: How to wire for Leaf Charging, charge curve, and battery temp

Post by tom91 »

alucas wrote: Tue Mar 24, 2026 12:09 am Finally I have a set of 5 dallas one wire temp sensors in my battery pack. I use a ESP 32 to reads them.
Easiest is to send them over CAN.

How do you monitor Cell voltages?
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alucas
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Re: How to wire for Leaf Charging, charge curve, and battery temp

Post by alucas »

Hello
Thanks for the input. I will connect the CP pin from the charge port to the PDM and the Proximity from the charge port to the PDM and Zombie.

It should be easy to use a ESP 32 to convert the temps to Can messages.
@Tom
Currently I don't have a way to monitor cell voltages. I have had a hard time finding the best solution. My batteries are in a two boxes one in the front one back. I considered running a set of 48 wires from the front to the back to use the leaf BMS but then decided I didn't like this idea. I would like to use the thunderstruck solution and connect it to the zombie. Because I also have a IVT shut I think this should work. I have read some of the postings on this and it seems like this might work.

Prior to assembly I did measure all the cell voltages and they are all very close. I would have to look at my notes for the statistics. I think they are within 0.02V of one another.

Thanks
Aaron
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