Data3 min readSteer AI R&D
Battery health from the car's own signals
Reading the state of the battery from data the car already produces.
The battery is one of the hardest parts of a car to judge at a glance, and one of the most expensive to get wrong, especially on electrified vehicles.
The car monitors its own battery continuously. DeepDiag reads those signals during the road test, when the battery is actually working.
The models turn them into a state-of-health finding for the traction or starter battery, with the same method on every car.
The finding sits in the report next to the engine, suspension and brakes, so the battery is part of the price discussion from the start.
These notes describe the method in general terms. Findings in a report always come from the car's own road test.
