My mother has bought a 2012 Porsche Cayenne Hybrid (no plug-in). This one has a NiMh battery. That’s where my neck hair is. I immediately think of the old mobile phone batteries and cheap battery vacuum cleaners, battery drills, etc. With them the batteries are raked by memory effect and general aging. How do the car manufacturers solve the dilemma? My brother thinks that the batteries have a lot to do with memory effects and overall aging. It seems to me that this is a bit dubious. With modern hybrids with LiIo batteries, the problem is certainly not so tragic, but also these lose their power. And with a car for tens of thousands of euros it would be a drama. And an exchange is expensive and expensive. So someone here knows what?