There is a recipe for the 'Battery' item that lets you craft it using a barrel of sulfuric acid.
I think this recipe needs a buff (at least in the context of Space Age) as the upfront cost handwaves any advantages you might have gotten with productivity modules or other recipes for the barrel.

If I where to change the recipe it would be: 1x Copper plate + 1x Sulfuric acid Barrel = 1x Battery.

Reason being you already have the iron needed in the barrel itself.

I might actually just remove the recipe. Even with this buff it would still be very underpowered and I don't think its funny/silly enough for it to be worthy of a UI slot as it will just be bloat if nobody has a reason to use it.

Thanks for the suggestion nevertheless :D