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A comment on What Needs to Happen Before Electric Cars Take Over the World. Parent comment

Re:What Needs to Happen Before Electric Cars Take Over the W... by dagw on Tuesday December 19, 2017 @04:32AM (#15958944)
People have been talking about this for as long as they've been talking about electric cars, and several companies have demoed prototypes. The two main problems are that the machines needed to do this change are very expensive and tricky to maintain compared to a simple gas pump, and more importantly, unless you can get all car manufacturers to agree to a universal standard for batteries and battery access you're going to need a half dozen different machines and batteries at each gas station, driving up the costs even further.
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Re:What Needs to Happen Before Electric Cars Take Over the W... by michaelt on Tuesday December 19, 2017 @08:06AM (#15959886) 

  unless you can get all car manufacturers to agree
  to a universal standard for batteries
And unless batteries get so good that the battery in that £19,000 Renault Zoe has identical performance to the battery in that £90,000 Tesla Model X, they never will :)
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Re:What Needs to Happen Before Electric Cars Take Over the W... by dagw on Tuesday December 19, 2017 @09:37AM (#15960465)
Or for that matter people accepting having their brand new Tesla X battery replaced with a 5 year old Tesla X battery.

I suppose one solution would be that cars have two batteries. One battery that is specific to the make/model of the car and one battery that is easily replaceable. So perhaps the cheap Renault basically only has the replaceable battery while the Tesla X has 70% of its battery capacity in it's super awesome main battery and only 30% in the 'crappy' replaceable battery which you only replace when you quickly need an extra 100 miles of range.

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