Originally Posted by Maksutov

Personally I find wireless routers to be very inconvenient. The batteries will typically run out just as you're in the middle of some complex design on a drawer front or a headboard. Then if you haven't already ruined the workpiece, it's a real pain to try to get the cut started so that it merges seamlessly with where you left off.

Routers with power cords are the best. You just have to pay attention to where the power cord is, as when using a circular saw, etc.