BuHybrid L6 review: This corded pool cleaner has a battery, too

This robotic pool cleaner can run on battery power or with a connected cable, but it's only effective at cleaning the pool when plugged into an AC outlet. Here's a curious concept from the new-to-us robotic pool cleaner manufacturer Bublue: The BuHybrid L6 is a robotic pool cleaner that can run via a plug-in electrical connection or via an internal battery, a hybrid design that makes more sense than it might seem at first, at least on paper. On the surface, the design has a lot in common with the Polaris VRX iQ and other power-corded robots. A small power box connects to standard wall power via a short cord. A separate, waterproof 49-foot-long cable then connects from the box to the 22-pound robot, attaching to its top via a large four-prong adapter with a screw-on sealing system that waterproofs the connection.