The new version of USB-C PD (ver 3.1 with EPR) supports up to 240W using 48V at 5A.
So why not come out with a new (smaller?) EB model with 240W USB-C in/out plus a new (smaller?) battery that also has 240W USB-C in/out.
That way this can charge the new laptops that will support PD 3.1 at 240W plus allows an external battery that also connects via PD 3.1 (you might even sell a lot of those batteries solo)
Call it the EB240 (100wh?) and B240 (1000wh?).