lets go further, lithium battery powered robots may replenish by drinking electrolyte, and excreting a counter-ion brine evacuated from the replenishing battery system.

The AIs will inform other AIs that they should drink it by telling each other, "it's got electrolytes."

They can do it on the street too, they are already begging for recharge money

https://www.ndtv.com/offbeat/video-shows-humanoid-robot-begg...