[n6nl]

I have successfully displayed the following:

• Traction (HV) Battery Voltage (Volts)
• Traction (HV) Battery Current (Amps)
• % State of Charge (%SoC)

with my trusty ScanGauge 2 using XGauges.

Here‘s an example while sitting in my driveway (as I sat there for 20 minutes with the vehicle in Ready and the audio system on, etc., the %SoC dropped slowly):

The 366VDC is the traction battery voltage.

The 3.6A is the traction battery current.

The 67.0SOC is the % State of Charge of the traction battery.

The 14.1VLT is the auxiliary battery voltage.

There’s more to be discovered, stay tuned.

I will check out how this plays out while driving tomorrow.

Here’s the XGauge programming (from the 2021 RAV4 Prime):

Those work for the Solterra (and likely the bZ4X).

I will probably borrow a CANBUS data recorder from ScanGauge to see what else we can discover.

I would love to have traction battery temp, traction battery coolant temp, front and rear motor torque, etc.

 

[Ducatista]

Great info!

 

[bobleon39540]

I have successfully displayed the following:

• Traction (HV) Battery Voltage (Volts)
• Traction (HV) Battery Current (Amps)
• % State of Charge (%SoC)

with my trusty ScanGauge 2 using XGauges.

Here‘s an example while sitting in my driveway (as I sat there for 20 minutes with the vehicle in Ready and the audio system on, etc., the %SoC dropped slowly):

View attachment 1697

The 366VDC is the traction battery voltage.

The 3.6A is the traction battery current.

The 67.0SOC is the % State of Charge of the traction battery.

The 14.1VLT is the auxiliary battery voltage.

There’s more to be discovered, stay tuned.

I will check out how this plays out while driving tomorrow.

Here’s the XGauge programming (from the 2021 RAV4 Prime):

View attachment 1698

Those work for the Solterra (and likely the bZ4X).

I will probably borrow a CANBUS data recorder from ScanGauge to see what else we can discover.

I would love to have traction battery temp, traction battery coolant temp, front and rear motor torque, etc.

What is the power this setup uses?

 

[n6nl]

What is the power this setup uses?

In proper sleep mode, nearly zero. In use, doesn’t matter. Plugs into the ODB II port to get data and power.

I would recommend the ScanGauge 3 over the older II. I happened to already have one which I used with my Sprinter diesel RV until we sold it.

Today I also got Max and Min traction battery temperature working, along with auxiliary battery current.

 

[n6nl]

Oh, current traction battery temperature works, too, Started out at 53F and went to 54F after a few miles of stop and go, startup and shutdown shopping around town.

 

[Whoabear]

So does this mean that the car is tracking all this info, just doesn’t display it?

 

[TheMarc]

I 'm not sure what you mean by currently tracking the info, but it's there, available, and can be accessed.
Toyota said they would bring an update that would display the SOC on the BZ4X. I don't know who handles Subaru's software? [Edit] I'm wondering if they are "dependent" on Toyota and if they will have the same updates, if they need to wait on Toyota to first roll them out, if they can not do them, and if they could offer something completely different on battery management (charging speeds, buffer, etc.)?

 

[n6nl]

Some of the information is broadcast on the various CANBUS buses in the car, some are sent through the CANBUS multiplexer and appear on more than one bus, queries and commands can be sent on a bus or through the mux.

The example I showed was actively sending a command through the OBD II port to an ECU which responds with the requested data. That data is displayed on the ScanGauge II display.

I have it set to query and update about once per second.

I have also successfully read the traction battery temperature and the high and low value for it.

I’ll post a complete list when I have finished some additional work, in a few weeks.

Right now, I am mostly working on getting the vehicle set up to haul our five dogs safely and comfortably.

I’ll post pictures of what I bought or built for that in a separate thread in a couple of weeks.

 

[Ducatista]

Some of the information is broadcast on the various CANBUS buses in the car, some are sent through the CANBUS multiplexer and appear on more than one bus, queries and commands can be sent on a bus or through the mux.

The example I showed was actively sending a command through the OBD II port to an ECU which responds with the requested data. That data is displayed on the ScanGauge II display.

I have it set to query and update about once per second.

I have also successfully read the traction battery temperature and the high and low value for it.

I’ll post a complete list when I have finished some additional work, in a few weeks.

Right now, I am mostly working on getting the vehicle set up to haul our five dogs safely and comfortably.

I’ll post pictures of what I bought or built for that in a separate thread in a couple of weeks.

We appreciate all the info you provide!

 

[monty]

I have successfully displayed the following:

• Traction (HV) Battery Voltage (Volts)
• Traction (HV) Battery Current (Amps)
• % State of Charge (%SoC)

with my trusty ScanGauge 2 using XGauges.

Here‘s an example while sitting in my driveway (as I sat there for 20 minutes with the vehicle in Ready and the audio system on, etc., the %SoC dropped slowly):

View attachment 1697

The 366VDC is the traction battery voltage.

The 3.6A is the traction battery current.

The 67.0SOC is the % State of Charge of the traction battery.

The 14.1VLT is the auxiliary battery voltage.

There’s more to be discovered, stay tuned.

I will check out how this plays out while driving tomorrow.

Here’s the XGauge programming (from the 2021 RAV4 Prime):

View attachment 1698

Those work for the Solterra (and likely the bZ4X).

I will probably borrow a CANBUS data recorder from ScanGauge to see what else we can discover.

I would love to have traction battery temp, traction battery coolant temp, front and rear motor torque, etc.

Very interesting - I wondered if this was what you were talking about. I'll have to see if I can find mine in my basement, and find the instructions online 😃

 

[KSchneider]

Some of the information is broadcast on the various CANBUS buses in the car, some are sent through the CANBUS multiplexer and appear on more than one bus, queries and commands can be sent on a bus or through the mux.

The example I showed was actively sending a command through the OBD II port to an ECU which responds with the requested data. That data is displayed on the ScanGauge II display.

I have it set to query and update about once per second.

I have also successfully read the traction battery temperature and the high and low value for it.

I’ll post a complete list when I have finished some additional work, in a few weeks.

Right now, I am mostly working on getting the vehicle set up to haul our five dogs safely and comfortably.

I’ll post pictures of what I bought or built for that in a separate thread in a couple of weeks.

Your data are greatly appreciated. And your dogs apprecoate the comfortable ride.

Eventually I would welcome knowing the battery temp at which the battery heater turns on. I actually wonder about ambient temp when it truns on since I have an inside the garage EVSE I can plug in on cold days. Battery comfort?

 

[sreidvt]

Excellent, thanks for the info. Please let us know if you find out how to read SOH.

 

[n6nl]

SOH? SOC? State of Charge (in %)? That’s there. Use the 2021 RAV4 Prime XGauge settings for SOC for the “hybrid” battery. That will be our ”traction” battery state of charge. I’ll post more details when I have fleshed out the table of what I have discovered.

 

[sreidvt]

SOH? SOC? State of Charge (in %)? That’s there. Use the 2021 RAV4 Prime XGauge settings for SOC for the “hybrid” battery. That will be our ”traction” battery state of charge. I’ll post more details when I have fleshed out the table of what I have discovered.

SOH (State of Health) is a different measurement and a really interesting one that enthusiast EV owners have been tracking for years now. SOH describes the current maximum capacity of the battery as compared to what it was capable of when new. Many Tesla owners track this but I don't know what app they use to do that. Many Leaf owners, including me, use an app called LeafSpy that reads from a Bluetooth sender which plugs into the OBD II port. In my car, that sender is always connected.

New or old, not all examples of an EV will have the same state of health -- naturally. For a first generation Leaf for example, 2011-2017, an SOH of 80% or better is quite good. So people who are doing careful shopping of used Teslas, Leafs, etc. often check SOH before they buy a specific car. It surprises some salespeople but then the motivated ones often want to learn about it. I myself will check that, if possible, even with my next new EV.

Here's why this would matter for a Solterra. Many of the examples being sold now sat at ports, or similar, for several months. If they were parked at a very high or low state of charge their batteries will likely be a bit more degraded than cars that sat at about 50% charge. So some "new" Solterras might be at 100% SOH now, some at 97%, etc. Does that matter? It can with a car like the Solterra which has modest range. It can also suggest how healthy the battery will be long term. There will probably come a time when sellers are required to report SOH when they sell a car, just like they now have to report odometer mileage. But the tech. is way ahead of the rules now and a lot of people, understandably, wouldn't know to check this.

So I'd be curious to hear if you find a field reporting SOH or anything similar.

 

[n6nl]

Thank you for the detailed explanation. I should have thought of that because that’s the useful value for the battery health of phones and tablets.

I’ll look for that during data capture. The CANBUS gear arrives tomorrow.

 

[sreidvt]

Thank you for the detailed explanation. I should have thought of that because that’s the useful value for the battery health of phones and tablets.

Exactly. Same idea. If that field is available and Solterra owners start checking then it would be interesting to see what state these "new" batteries are in. They may be close to 100% because Toyota is so careful with their buffers at both ends. But I will be curious to know.

 

[KSchneider]

I am also greatly interested in the ability to measure SOH.. I am not a high end tech user so will depend on others for this but this seems a very important question.

 

[sreidvt]

With EVs it is a major question for sure. We know that the Solterra has a very conservative charging curve as well as generous charge buffers at both ends. The payoff for that, Toyota tells us, is 90% SOH after ten years. If that's true, it will be great and these cars will continue the Toyota/Subaru tradition of being useable for many miles and years. And a battery that keeps its capacity is much better for the environment of course. So it will be interesting if Solterra and BZ4X owners can start tracking this like other enthusiast EV owners do.

 

[KSchneider]

With EVs it is a major question for sure. We know that the Solterra has a very conservative charging curve as well as generous charge buffers at both ends. The payoff for that, Toyota tells us, is 90% SOH after ten years. If that's true, it will be great and these cars will continue the Toyota/Subaru tradition of being useable for many miles and years. And a battery that keeps its capacity is much better for the environment of course. So it will be interesting if Solterra and BZ4X owners can start tracking this like other enthusiast EV owners do.

Read your post on Solterra FB page about SOH. Glad I did.

 

[sreidvt]

Read your post on Solterra FB page about SOH. Glad I did.

Cool, glad it was helpful.