Is Volvo, now a days, not a part of a big Chinese multinational .... so they need to sell even more of their batteries ... :?
But serious, not only the lithiumbatteries are the way to go, now they start testing more and more the so called Super capacitors, extremely quick to
charge, so a "tankstop " would take only 30 seconds, plugging in and out would cost more time, and if they are able to create Super Capacitors with
extreme much capacity, it wil open new horizons ... beside of that they are extremely lightweight.
I saw already people starting up their cars with self made 12v Super Capacitors cranking "battery"
Search on youtube for videos.
Daniel
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Daniel Jacobs, No GMC, but an admirer of them .... We'll see what the future brings ....
Always remember, the world is full of nice people!
So, if you can't find one, be one!