> when your existing ones break

They last 25 years. Enough time to spin up domestic manufacturing if you're really paranoid.

> or you need more

Lots of countries manufacture them today.

I'm not talking about manufacturing. I am talking about raw materials for chips, battery cells, etc. You can't be sovereign if you have the capability to build something but don't have the resources to build it

	▲	triceratops 19 minutes ago \| parent [-]
		If your electricity usage isn't growing like crazy, existing batteries can simply be recycled to make new ones. What chips are you talking about? Again, by your definition, almost no country is "sovereign" for anything. Not fossil fuels, not PV and renewables, and certainly not nuclear. It's an impossible standard but only renewables get held to it.