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My only issue with the promotion is that it neglects to tell us anything about battery life & replacement cost. I have a problem with electric vehicle manufacturers touting low cost/mile (as this video does) while not mentioning those issues. It borders on deceptive.
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It doesn't border on deceptive. It IS deceptive.
A car with such a short range will have a hard time getting appreciable battery life since lead acid batteries only last a few hundred deep discharge cycles, if you take care of them.
Lets say it gets 400 cycles to 75% discharge, which is 30 miles, about what the average American drives in a day. That's 12,000 mile battery life. I don't know what its pack is using, but lets say replacement is $800. That's $.0667/mile battery cost. Add in electricity and the minimal amount of maintenance, and it is clear that the Zenn is cheaper to run than a typical gas car.
If you want a lead acid EV to save money over a comparable gas car, you have to use a very large pack to get good range, so that the typical user isn't deep discharging it all the time.
While the Zenn may be cheap to operate compared to a midsize car or small SUV that uses gasoline, no gasoline vehicle like it is being made for the American market. If one were, it would probably get in the area of 100 mpg, which assuming similar maintenance costs to a normal gasoline powered car, would make the gasoline version of such a 25 mph neighborhood vehicle cheaper to operate than the Zenn.
EVs begin to get economical compared to gas cars when you use long-lived, long range packs in hypercars(eg. solectria Sunrise), compact/subcompact cars, midsize cars, small SUVs, and full size cars. Anything smaller than or larger than these sorts of vehicles will usually have difficulty saving money over a comparable gas car for a commuting application. An electric full size pickup with 2-ton carrying capacity will usually cost a fortune in battery costs, just as an NEV will cost a fortune in battery costs, compared to their gasoline counterparts when they exist.
The Zenn is in luck though. It fills a market niche in the U.S. that gasoline powered cars haven't touched in decades, and it is still cheaper to operate than a normal gasoline powered car.
A cost effective EV will look something like a Toyota Corolla, Nissan Altima, or RAV4, and it would save ****loads of money over the gasoline versions if designed for it. It all comes down to sizing the battery properly, and using a management system that keeps the pack balanced.