September 10, 2025

What is Battery SoH (State of Health)?

Battery SoH (State of Health) is an indicator that defines the condition of a high-voltage traction battery in an electric vehicle or plug‑in hybrid. It is expressed as a percentage and compares the battery’s current usable capacity with its nominal capacity at the moment the car left the factory.

100% SoH means a factory‑state battery with full usable capacity.

A lower SoH percentage indicates gradual wear resulting from the natural aging of cells and the way the vehicle has been used.

In practice, SoH helps assess the real value of an electric vehicle. Buyers gain confidence that the battery—the most expensive component of the car—is in good condition, while sellers can demonstrate the attractiveness of their offer.

How to interpret SoH?

Manufacturers usually define a minimum battery performance threshold below which a replacement or repair may be carried out under warranty. Most often this threshold is 70%. This means that if SoH falls below this level during the warranty period, the owner may be eligible for complimentary warranty service.

For used‑car buyers, the SoH figure is the most important parameter alongside mileage—because it indicates how much energy the battery can actually hold and what the vehicle’s real‑world range will be.

VirtualCar360 – present Battery SoH in a clear, engaging way

With VirtualCar360, you can most importantly present it to customers in an attractive, marketing-friendly format—as part of a digital certificate or vehicle information card.

  • Your branding—whether you’re a dealer, importer, or a large dealer group.
  • Any data provider—Aviloo, Bosch, MOBA, or the vehicle manufacturer’s own measurement. No matter the source of the SoH reading, VirtualCar360 will wrap the result in a professional, consistent graphic and communication style.
  • Clear visualisation—charts, progress bars, and certificates make even a complex parameter easy to understand and trustworthy for the customer.

As a result, the seller gains a trust-building tool, while the buyer gets the confidence that they are investing in a vehicle with a battery in proper condition.

Example:

In a listing for a 2023 IONIQ 5, we present a certificate showing an SoH result of 99.2%, a visual progress bar, a 70% warranty threshold, and information about the battery warranty—up to 8 years or 160,000 km. The entire presentation is fully integrated with the listing platform, fully responsive, and ready for print or export to PDF.

Benefits of presenting SoH with VirtualCar360:

  • Highlight vehicles with excellent battery condition (e.g. above 90%)
  • Build trust in your used car program
  • Universal compatibility – works with any measurement system (API or PDF import)
  • Consistent with your dealership or program branding (e.g. Hyundai Promise, Audi Select :plus)
Want to implement SoH presentation in your dealership or used car program?
Contact us – we’ll show you how easily you can integrate battery data into your online offering.