[flyingpenguin]

I have been working on a very similar build.

One feature I decided was a requirement is holding me up. I really want pogo pins on the sides of the keyboards, so that they magnetically attach and the left will charge the right.

How do you charge the left and the right since they require separate cables?

[bb88]

That doesn't seem to hard to do. They sell the connectors on amazon.

https://www.amazon.com/Magnetic-Connector-Positions-Pogopin-...

Each battery should probably have their own charging circuit anyway. So the pogo pins should be 5V and ground coming directly from the USB 5V line.