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China's new iron battery hits 99.4 percent efficiency over 6000 cycles
(interestingengineering.com)
this post was submitted on 29 Apr 2026
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Technology
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It really depends on the charge/discharge conditions that the particular test is using. You can do testing in the lab that is way harsher than typical usage or you can make it easier. In terms of this cycle testing for Li-ion I would say that typically the lab testing would be harsher than real world primarily because lab testing is done between 0% and 100% depth of discharge constantly where most people are charging their batteries much before then and only cycling them at high rates periodically.