XENTRY 09.2025 SOH HV Battery Definition

[Rade1978]

How do I determine the state of health (SOH) of the high voltage battery in a Mercedes EQA 250+ with the XENTRY system 09.2025? When determining this parameter in the "Special Processes" section (BMS), a PDF printing error message appears.

 

[mattehardware]

This happens because you're trying to print a PDF page, and your system isn't installed correctly. I recommend reading the value in the BMS information section without sending a print job or attempting a system restore, and also making sure the PDF Center software is installed and working correctly.

 

[myztic]

It is important to understand that the SOH value is always approximate and may be lower in winter and during the cold season, and may increase in summer. Also, sometimes the BMS parameters can change, causing the battery to discharge. This can be verified by charging the vehicle to 100% SOC and measuring the open-circuit voltage (OCV), which may be significantly lower than before. There's a lot to be said about high-voltage batteries, and in most cases, it's enough to check the manufacturer's stated range (EPA standard) and compare it to the range of a new car. This will give you an approximate indication of how worn out your battery is. In any case, it should be mentioned that batteries generally wear out over time and due to charging characteristics, and the mileage is usually not even close to the main parameter showing the condition of the high voltage battery (HV batt SOH).

 

[Rade1978]

Yes, I understand, but unfortunately I can't see it because every time I go to the Battery Capacity section, it should calculate the state of health (SoH), but for the past few months, XENTRY hasn't returned any results, simply reporting, "It can't be done because PDF printer has malfunction".
The state of health (SoH) isn't displayed as actual values, but rather as specific battery functions/capacities...

 

[Strelec]

This is also correct - you can also use the method with a capacitance. See attachment. With newer AddOns, SOH can be shown as %, but for older versions of XENTRY you need to calculate it yourself. Plus, this data can also be found in the control unit log.
The battery type can be determined by the VIN code.