You left out the solar to electric efficiency. If that's 30% (which is an upper limit if you produce the best solar cells you can) batteries have twice as efficient a round trip loop from the sun. In return, they are far less mobile and heavier to ship once loaded. Meanwhile, we can talk about moving around H2 via pipelines. Or simply higher energy storage for big uses. (Less energy spent dragging around batteries). Plus, the batteries do require lithium, which is pretty nasty stuff to get.