Lotus Elan

Electric Elan

PostPost by: Certified Lotus » Thu Dec 06, 2018 5:19 pm

As far as I am aware the free battery replacement is for original owners and while under warranty.
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PostPost by: Jon Eckman » Thu Dec 06, 2018 7:56 pm

Maybe replace them free of charge means the batteries come uncharged -
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PostPost by: Andy8421 » Thu Dec 06, 2018 8:00 pm

Certified Lotus wrote:The biggest problem with electric cars is the cost of battery replacement. In the next 10 years you will see Tesla’s for sale for next to nothing because it needs a $25,000 battery pack. In essence it will be a throw away car until the cost of batteries come down significantly.

Of course that is not a concern with this car as the battery replacement is only $12,000.


It seems that the rate of battery degradation in Teslas is far lower than had been anticipated. Telsa's thermal management of the battery pack appears to have reduced the reduction in capacity to the point it really isn't an issue.

https://electrek.co/2018/04/14/tesla-battery-degradation-data/
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PostPost by: knockoffnut » Thu Dec 06, 2018 8:07 pm

Toyota claims that the main batteries in their hybrids last the life of the vehicle, and ours is past 10 years and has over 200,000 miles on it now. I suspect that battery life is not really an issue. This EV Elan is quite interesting, but I really wonder what it weighs, and how it feels with all that mass out at the extremities. I also wonder why the battery pack is so large and yet the range so small on a car that is (otherwise) so light. An electric Seven would be an interesting proposition... I would certainly miss the sound, but I suppose one could always pipe a sound track through the stereo, just like new Porsches and BMW M5s... really... :- P
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PostPost by: Bombay Racing Green » Thu Dec 06, 2018 9:01 pm

Love them or hate them, Tesla/Panasonic are widely acknowledged to be the best battery manufacturers. They are performing better than expected. By not overcharging or over discharging the battery and not fully charging them (all the time) vastly increases their life expectancy. They use Lithium Nickel Cobalt Manganese Aluminum Oxide (NCA) LiNiCoMnAlO2 as their battery chemistry. This produces an extremely energy dense battery. However, it is VERY sensitive to mistreatment, hence all the horror stories regarding salvaged Tesla batteries catching fire. Unless you have an effective charge/discharge management system you’re asking for trouble.

It looks like this conversion has the standard DIY conversion Lithium Iron Phosphate (LiFePo4) chemistry batteries. They are very safe and can stand a greater level of abuse. However, there is a trade off. They’re less energy dense so you’ll need more of them. As an example in my Europa conversion I’m using 4 Tesla model S modules (yes, I do have a management system and am treating them very carefully!). This ends up as a 20kW pack which weighs 100kgs. An equivalent LiFePo4 pack would be 170kgs. As with any EV weight reduction is key.

Looking at the photos again. It looks like the batteries aren’t secured in the boot. The ones in the front have just a light cargo strap across them. Some seem to be just laid flat in the middle of the engine bay with no tie downs at all. I’d be worried about them joining me in the middle in the event of a shunt.

I have to stress that I don’t consider myself an expert in these matters. I did the conversion as an engineering challenge (as if restoring a Europa isn’t one already!). No cars were harmed in the process. Any changes can be reversed.

I’m now going to take cover!
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PostPost by: pharriso » Fri Dec 07, 2018 12:33 pm

Craigslist Ad has gone, probably sold?
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PostPost by: prezoom » Fri Dec 07, 2018 4:59 pm

If I were interested in an electric conversion to any car, my first stop would be EV West, in Carlsbad, CA. Michael Bream does some of the nicest conversions I have ever seen. All are done so they can be returned to original condition. Still trying to get a ride in the triple motor 308 Ferrari. Did get a ride in the BMW 325, coupled to a 2 speed Powerglide, that he raced at Pikes Peak. He got a 4th place finish against purpose built EV's.
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PostPost by: prezoom » Fri Dec 07, 2018 5:41 pm

Now on BAT, but a little late.
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PostPost by: gjz30075 » Fri Dec 07, 2018 8:40 pm

Looks like it's on BAT as a story, not an auction
https://bringatrailer.com/2018/12/06/ad ... onversion/
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