US start-up develops polymer-based batteries for stationary storage

https://www.pv-magazine.com/2022/04/14/us-start-up-develops-polymer-based-batteries-for-stationary-storage/

"up to five times larger than lithium-ion systems of the same capacity and don’t require active temperature control. The product is being offered in power strings which the company said can rapidly discharge power, up to 1 MW, in less than 10 seconds and be recharged in less than five minutes. Each power string measures 2.2 m x 0.8 m x 3.4 m and weighs 1,590 kg. Its nominal voltage is 528 V and the voltage range is 158 V to 972 V... continuous operation at temperatures between -40 C and 50 C"

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