First, you should understand the underlying tech: lithium-ion (Li-ion) batteries, which are widely used in consumer electronics, including smartphones, laptops, and, you guessed it, robot vacuums.

The iRobot Roomba Combo Essential vacuum and mop hybrid robot is on sale for just $200.That’s a discount of $75 and one of the best prices we’ve seen on this particular model.

The difference is that newer “combo” robot vacuum and mop models are designed to actually scrub your floors. The first robot vacuums that could also “mop” simply slapped a thin, flat ...

The iRobot Roomba Essential Robot Vacuum is $100 off at Amazon right now, bringing its price to $149 — its lowest ever. More than 34,200 users have given the robot vacuum a five-star rating ...

The best robot vacuums cleanup common messes like crumbs and pet hair without being babysat. We tested 40 robovacs to choose the most reliable models.