Genuine question: Apart from size, what's different about the Lithium-ion batteries used in EVs compared to those in laptops, 'phones and household devices.
In our household, we're lucky if we can get five years from a laptop battery, three years from an iPhone and two years from a vacuum cleaner (take a bow Dyson for being easily the worst of the whole miserable lot, with Bosch not far behind).
Why would a car be any different/better on battery life?
That's an interesting article Rob in explaining why Li-ion batteries last so much longer in EV's compared to phones and laptops etc. What it doesn't touch on is charge
rates though. In the common lead/acid battery still in use in our ICE cars, stress which impacts battery life is caused to some degree if the charge current exceeds as little as 10% of battery capacity in amp hours for any length of time (rate of C/10). That would be 5 amps for a typical Mog sized 50 amp hour battery, although it's longevity is also born by the fact it's never discharged more than 5% of its capacity for the first few years of its life. On my boat I choose C/3 rate as an acceptable reduction in charge time v service battery longevity.
Li-ion on the other hand can withstand much higher charge rates up to 10C being mentioned. That's a hundred times greater than ideal for lead/acid. Suggestions (from the same source) are that those batteries are also stressed above a certain charge rate though in the order of 0.8 to 1C and probably akin to typical home charging, the latter being equivalent to 100 amps for a 100 amp hour battery, as an illustration only. I wonder therefore how regular use of supercharger points (350kW! being mentioned) will impact EV battery life where charge rates will likely be higher still.
