China has taken a significant step toward improving consumer confidence in the electric vehicle market by introducing a new voluntary standard for battery health reporting. The regulation, identified as GB/T 46991.1-2025, seeks to minimize ambiguity in how vehicle manufacturers present battery performance and degradation data to drivers. By establishing a unified framework for data presentation, the government aims to create a more reliable environment for both new and used EV buyers who currently face varying methods of diagnostic reporting.

A key component of these new guidelines involves the precision of information presented on vehicle dashboards and diagnostic interfaces. According to electrive, the norm dictates that display errors for battery health metrics must be restricted to a maximum threshold of five percent. This requirement is intended to curb inflated or inaccurate health reporting, ensuring that the statistics provided to the end-user reflect the actual state of the battery system more faithfully.

While the adoption of this standard remains voluntary at this stage, the move signals a broader intent by Chinese authorities to professionalize the aftermarket for electric vehicles and ensure that long-term battery integrity is communicated clearly. As the fleet of electric vehicles on the road ages, the need for standardized, verifiable health data is becoming increasingly critical for insurance assessments, residual value calculations, and ongoing maintenance. The industry will now monitor whether major automakers will choose to align with these guidelines voluntarily to set themselves apart as transparent leaders in the sector.