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Re: LIRR to test retrofitting M7s to run off battries

Posted by zac on Mon Apr 19 18:10:12 2021, in response to Re: LIRR to test retrofitting M7s to run off battries, posted by Olog-hai on Mon Apr 19 13:52:07 2021.

You are all underestimating the capabilities of modern batteries. These will certainly last over those distances, if you have enough of them.

Regenerative braking will add some to the distance they can travel, but don't expect miracles from that.

But the real ace in the hole of a battery powered train like this is the third rail or catenary. As soon as the train gets back into either's territory it will start to charge, whether moving or not.

So the question is how many Kwh does it take to get from the end of the 3rd rail out to Montauk and back, and how much capacity can you build into the train. My educated guess is you can build a lot into the train.

Remember too that the latest 787 aircraft use batteries to fly although not to provide propulsion.

And my car gets me from Brooklyn to Montauk and back on a single charge, but just barely. Depends on how hard I push it. Scale that up to train size and no problem.

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