Comment by kwhitefoot | Hacker News Reader

Comment by kwhitefoot | Hacker News Reader

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> using a fast charger all the times can damage batteries. Is this actually true?

A Google search suggests that there are lots of studies showing that 25 fast charging cycles wrecks the battery but I have driven my Model S from Norway to the UK and back three times which is about 12 k km altogether and I used Tesla chargers exclusively on the journey. The practical range is about 300 km so I must have charged much more than 40 times in addition to all the times I have charged on journeys from Oslo to Trondheim and back. I haven't noticed any significant degradation in range.

But who actually does it on ordinary days when not doing a road trip? I have had that 2015 Model S for three years and I only use the Superchargers when I know that I will travel more than a couple of hundred kilometre in a day; otherwise I can keep the car charged at home (usually just to 80% unless I plan a long trip and I usually charge again before I get to 20%. Plugging in to an ordinary domestic socket every couple of days is enough and takes seconds.

To be honest I have read it online as well. I don't know if it's true. I reckon if the battery is designed to take fast charging all the time, it should be okay. Another thing that affects batteries is weather. In colder climates like Europe you're probably okay. We have had reports of batteries losing half their capacity due to heat in Australia. Those were all Nissan Leafs, which didn't have any active cooling in place. We don't have an extensive supercharger network either. You'll probably be okay in East coast region. Forget about charging your car, in some remote areas you're probably not gonna get petrol either. You can only get diesel. Seems like EU is far ahead in EV adoption than AU.

Europe varies wildly in uptake of EVs because incentives and infrastructure vary so much. Here in Norway 50% of new car sales are pure EV and there are chargers all over the place. Ten percent of cars in the country are now electric. A lot of petrol stations, particularly Circle K, are installing chargers too.

But in the UK the story is very different, 10% of new car sales and a total of less than 2% of cars are EVs.

The difference is probably down to the taxes on cars. Here in Norway expensive cars are doubly expensive because of progressive taxation on them from which EVs are exempted but in the UK you just get paid back a few thousand pounds by the state when you buy an EV. So here EVs are comparable in cost to ICE cars especially at the expensive end of the price range.

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