Pools are great for relaxing, which is part of why cleaning them feels so laborious. I want to float on my back with a Coke Zero on my stomach, not scoop scum. Robotic pool vacuums can simplify the cleaning process, but the cord causes problems. Feed the cable in, watch it knot up on the ladder, fish the head out from under the steps when it pins itself there. The Wybot B1 is a cordless robotic cleaner that runs on a battery, drops into the water, and goes.