Read voltage and other details from HV battery?

[kbauer]

Hi,

is there a way to read the raw HV battery voltage, or even individual cell voltages and other details from the HV battery?

Orbit already displays a SoH and SoC percentage, so I assume it might be an adjacent feature.

These diagnostic features would incredibly valuable for independent analysis and repairs on the HV system, e.g. identifying damaged cells.
I'm also curious how Volvo treats the cells, i.e. where it sets the 0% and 100% SoC voltages, and how that differs for the SoC the dashboard shows, what's "actually" left at 0%, etc.

There's very little info about that, and it is hard to judge what it really means for the cell voltages when Orbit shows e.g. 83% SoC while the car shows 100%.

I found this picture, which suggests that at least the pack voltage is available via OBD using a generic OBD dongle:


https://insideevs.com/photos/918920/2023...-in-hybrid



There's also this Volvo Service Manual (?) that shows the individual cell voltages are available to VIDA



https://static.nhtsa.gov/odi/tsbs/2025/M...0-0001.pdf

[x119]

Try these
ECU Tools > BECM > Send CMD > 22 DA 02 - all cell SoC or 22 FD 73 - cell delta voltage

i suspect you'll need to be in a diagnostic session.

Can't test as don't have those electrical things in my car