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33 points xbmcuser | 5 comments | | HN request time: 0.6s | source
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clintfred ◴[] No.42208364[source]
Using Firefox's built-in translation...

> The key results: In the first approximately 30,000 kilometres, the loss of capacity is accelerated, and the so-called state of health (soH) drops relatively quickly from 100 to around 95 percent. With increasing mileage, real degradation decreases. According to the Electrive portal, Aviloo data from the 7,000 vehicles showed a (average) SoH of around 90 percent at 100,000 kilometres. According to this, the trendline is almost horizontal, between 200,000 and 300,000 kilometres, it is almost stable – and is well above the 70 to 80 percent of the battery guarantee. In fact, it is rather 87 percent.

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1. VincentEvans ◴[] No.42208426[source]
So basically in other words what this means - is that if battery capacity was over-provisioned by mere 13 percent with battery firmware keeping it essentially hidden - then in effect there would not be any degradation at all.
replies(2): >>42208484 #>>42208519 #
2. lokimedes ◴[] No.42208484[source]
That raises the question og whether they study factored this into their analysis. Don’t carmakers already overprovision?
replies(1): >>42218092 #
3. Night_Thastus ◴[] No.42208519[source]
They already over-provision to prevent users from charging the last few percent. That top end is where the most significant degradation happens when charging.
replies(1): >>42209709 #
4. carlhjerpe ◴[] No.42209709[source]
Like SSDs, the more expensive the drive the more extra storage cells it's got for the controller to use later
5. rootusrootus ◴[] No.42218092[source]
Some do, some do not. AFAIK Tesla does not. My Ford Lightning definitely does.