> People who have bought them abroad are sometimes advised to keep the battery between 20%-80-90% full.

You want to keep batteries roughly in that range to maximise their lifetime health. That doesn't mean the battery will explode if you do otherwise once in a while e.g. you charge limit the car to 80% for your daily drive and before a big trip you charge to 100%.

Route planners will generally keep you in that band anyway because charging speeds fall off a cliff as charge exceeds 80~90% (depending on the manufacturer's usable % standard), and it's rarely worth wasting 30mn charging to full to save 5~10mn extra at the next stop (the same occurs to a lower extent at very low states of charge, plus you want some spare, so the lower 10% are generally treated as a reserve).

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guenthert 5 days ago | parent [-]

> You want to keep batteries roughly in that range to maximise their lifetime health.

Huh? The car isn't doing that for you? Prius hybrids sure are (the old ones using NiMH batteries tried to keep charge between 40% and 80%).

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masklinn 5 days ago | parent [-]

A hybrid can do that by running the ICE (or not).

An EV can do that how exactly, refusing to run? Mugging the elderly for loose kWh?

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asdff 5 days ago | parent | next [-]

No need to get sarcastic. My phone and laptop have this feature.

	▲	masklinn 4 days ago \| parent [-]
		Wow your phone and laptop have a feature which makes the battery never run out? The wonders never cease.

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guenthert 5 days ago | parent | prev [-]

Well, stopping the car at 40% (20% for Li-ion) capacity or alternatively at 0% with dead batteries, I know what I prefer (ideally there would be an option for emergencies, perhaps disabled in rental cars ;-} .