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A comment on CO2 Batteries That Store Grid Energy Take Off Globally. Parent comment

Re:CO2 Batteries That Store Grid Energy Take Off Globally by nirvael on Monday December 22, 2025 @06:49AM (#46353432)
I'm sort of thinking out loud here but could you have two batteries running simultaneously but on opposite cycles, so while one is cooling the other is heating? Obviously it wouldn't be 100% efficient but it might reduce some wasted energy.
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Re:CO2 Batteries That Store Grid Energy Take Off Globally by wongarsu on Monday December 22, 2025 @07:09AM (#46353530)
The heat and cold are created by the compressing or decompressing the CO2 (our any other gas). If one battery is heating while the other needs heat that would imply that one is charging while the other discharges, which is rarely useful in normal operation
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Re:CO2 Batteries That Store Grid Energy Take Off Globally by nirvael on Tuesday December 23, 2025 @06:20AM (#46364389)
Yeah you're right I didn't think that through, why would you charge a battery while discharging another, just use the energy directly.
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Re:CO2 Batteries That Store Grid Energy Take Off Globally by sagarm on Monday December 22, 2025 @01:05PM (#46356736)
Why would you be charging one battery while discharging another? That would just be wasting energy.
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