Inserted an optional INA219B for monitoring load current. And a 10A Schottky for bypassing the boost converter so that this thing can be a straight pass-through your existing laptop charging cable.

You can see where this is going, no points for guessing that there'd be another board on top of this to emulate the third charging pin like this . Also I could display the current state? How about a 0.96" OLED?