The hubs present in the Mindstorms Robot Inventor or SPIKE Prime sets have 2100mAh lithium-ion batteries which can be charged with the accompanied cable with a micro USB connector on one end and a regular USB connector on the other end. You need to provide your own USB charger and a high performant one such as the ones used with an Apple or Samsung device is recommended.
My question is, during an exposition, e.g. when the hub is used in a GBC module, can you leave the cable connected so it will function as a continuous power supply? Or is this not recommended because it could mess up the charging cycles of the rechargeable batteries? Would the performance of the models stay constant?