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betajet
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Aluminum-air battery not rechargeable
betajet   6/12/2014 3:05:17 PM
You have to follow the link to Design News to get to the "money quote":
Aluminum-air also differs from lithium-ion in that it is not rechargeable. That's why the company is suggesting that its batteries be used in a hybrid arrangement, in which drivers would employ lithium-ion on a daily commuting basis, while aluminum-air would serve only on those days when greater range is needed. In such an arrangement, the aluminum-air system would last about a year before needing to be "refurbished" at an unknown cost.

So, great, you're carrying around extra weight every day hoping you'll not need it instead of driving a lighter car with more daily range.

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