While lithium extraction technologies generally focus on ways to get the essential metal out of the ground, there's another source to mine: existing batteries that no longer work. A new technique could now make that process economically viable.

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[–] 3 points 11 months ago* (last edited 11 months ago)

In case anyone’s curious: it is likely a cell wrapper misprint/typo.

4300mWh AA lithium ion cells are a standard extended-life chemistry. 2866 mAh is their actual rated capacity.

Edit: 2866 x 1.5 = 4,300

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