Battery storage may have an alternative technology on its way - the flywheel.
https://www.pv-magazine.com/2022/02/24/french-flywheel-storage-system-specialist-secures-e10-million-investment/
Funny thing I did a a project paper on this subject 30 years ago.
There was even a Le Mans race car with one installed in the early 90s and trams have had them installed for energy recovery and storage. Run a flywheel on magnetic bearings and in a vacuum, nearly no standing losses. Use a magnetic clutch to engage a motor/generator for power output and power input.
It's not rocket science as they say, just some kenetic energy.