Really depends how familiar you are with cars in general I think. If you have a good feel for how worn a car should look inside/out for the mileage (to watch out for clocking, though this would be difficult on an electric), any strange behaviour while driving/braking/turning (trying to detect tracking/suspension issues) etc then you should be fine. I’ve bought a good few secondhand cars over the years, I got assessments done on the first couple (which were great and very reassuring!) but would not bother now unless spending serious money. If you know somebody in the trade or who buys secondhand cars regularly and can go with you to take a look that’s another cheaper option.
I mentioned in the other thread that you can read the exact battery health with a dongle/app, down to the individual battery cell if you’re interested. This is the dongle - https://www.amazon.co.uk/Carista-Bluetooth-Adapter-Scanner-Technology/dp/B00YVHGTBM/ref=mp_s_a_1_1_sspa?crid=35CVDUR11H5PZ&keywords=carista+obd2&qid=1636403656&sprefix=carista+&sr=8-1-spons&psc=1&smid=A2FFESA4WJEXUA&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzNVZPOFU1S1Y2N01PJmVuY3J5cHRlZElkPUEwNDMxMzE4VEQ2U1pOMElRTjdOJmVuY3J5cHRlZEFkSWQ9QTAzNTYyOTk3V0tST1ZaWVBOQkcmd2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ== (Link) and the app is called LeafSpy for iOS/Android. Very easy to use, the OBD port is under the steering wheel and it takes 39 seconds to read. To be honest though seeing the 12/12 battery health lights on the dash is enough.