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This seems concerning. From the Institution of Mechanical Engineers
"Fast-charging of electric batteries can ruin their capacity after just 25 charges, researchers have said, after they ran experiments on batteries used in some popular electric cars."
"For the first 13 charging cycles, the battery storage capacities for both charging techniques reportedly remained similar. After that, however, the industry fast-charging technique caused capacity to fade much faster – after 40 charges the batteries only had 60% of their storage capacity."
"Fast-charging of electric batteries can ruin their capacity after just 25 charges, researchers have said, after they ran experiments on batteries used in some popular electric cars."
"For the first 13 charging cycles, the battery storage capacities for both charging techniques reportedly remained similar. After that, however, the industry fast-charging technique caused capacity to fade much faster – after 40 charges the batteries only had 60% of their storage capacity."