If I recall correctly, the issue with the EOS technology was round trip efficiency, which was a lot below lithium ion. Would be interesting to know if they have solved that issue.
EOS Energy is already manufacturing modular aqueous zinc batteries in Pittsburg PA that are designed for commercial scale & micro grid battery electric storage systems (BESS), although not in vehicles. Unlike Lithium BESS, they don't require air conditioning or fire supression Systems. EOS just got a loan commitment from the US DOE to expand their production capacity. Existing Lithium BESS batteries might eventually be recycled for vehicular use, due to lighter weight.
The newly developed battery is designed to be lighter, have a longer lifespan, and offer higher performance. Additionally, two new components could reduce the costs of energy storages and even enhance their safety.
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