"It used to be that age and mileage were the two headline details pored over by would-be buyers of second-hand cars. But as more people shift to electric, scrutinising the health of a car's battery has become arguably even more important. How has that battery been treated? Did the last owner regularly fast charge it to 100%, for example? That has the potential to shorten an EV battery's lifespan."
"Take Mr Dunstan's Nissan Leaf. This is a model of EV built without the kind of sophisticated, liquid-based battery cooling system common to many other EVs. While Nissan has rectified this in the latest generation of Leafs, earlier models show a considerable shortening of their range year by year, according to data analysed by US insurance and research firm NimbleFins."
Kerry Dunstan and his partner bought a 2021 Nissan Leaf with 29,000 miles and a reported battery state of health of about 93% for £12,500. The Leaf provides practical space but is less sporty than other EVs he owns. Battery state of health and charging history are becoming critical factors for used EV purchases because fast charging to 100% can shorten battery lifespan. Some earlier Leafs lack liquid-based battery cooling and show year-on-year range shortening, according to NimbleFins data. Battery black box concerns deter some buyers, while battery analytics firms claim high-accuracy condition assessments and some EVs outlast early predictions.
Read at www.bbc.com
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