Inspect the EV
—battery health
—estimated range
—full charge cost
—value signal
Detective report
Battery health is often called state of health (SoH). This simplified model combines age, mileage, and fast-charging habits to show how data can guide a smart car-buying decision.
Press run to estimate the car's battery condition.
Battery detective challenges
Mission 1: Taxi trade-off
Choose the taxi scenario. How much range is left, and would the lower price make sense for short city trips?
Mission 2: Fast-charge experiment
Raise fast charging from 10% to 80%. What happens to battery health and the value signal?
Mission 3: Budget buyer
Find a setup with battery health above 88% and a used price below £20,000. What clues helped?
Mission 4: Future value fund
If good battery care protects 6% of resale value, how much could go into a financial-freedom fund?