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A comment on An open-source flow battery kit. Parent comment

Re:An open-source flow battery kit by Workaccount2 on Tuesday August 13, 2024 @01:02PM (#41237216)
You still need something to power the pumps. And we already have long term low power batteries. And solar + battery has filled this role for decades.
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Re:An open-source flow battery kit by kirksmith on Wednesday August 14, 2024 @06:14PM (#41251088)
The pumping cost constitutes a 1-2% total penalty on round-trip energy efficiency for a well-designed flow battery.
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