TCL RM9L Robot Vacuum Review: Affordable Smart Cleaning with a Few Caveats

When TCL announced the RM9L, the buzz was hard to miss – a robot vacuum that supposedly packs lidar navigation, multi‑room mapping and a mop attachment without the premium price tag. I was skeptical, but also curious enough to let this little machine take over my weekly cleaning routine.

The first thing you notice is the design. The RM9L looks like a sleek, matte‑black disc, about the size of a large grapefruit, with a subtle LED strip that lights up when it’s charging or in operation. It’s not the most eye‑catching gadget, but it blends well with modern décor – a small plus for anyone who hates clunky tech on the floor.

Navigation is where the robot claims to shine. Using a 360‑degree lidar sensor, the RM9L scans its surroundings and creates a floor map that you can view in the companion app. In practice, the mapping feels reliable; the vacuum learned my apartment’s layout within the first two runs and started taking the most efficient routes. There are occasional hiccups around low‑profile furniture, where it sometimes gets stuck under a sofa leg, but a quick tap on the app’s “Boost” button usually nudges it back on track.

Suction power is modest but respectable for a device under $300. On hard floors, it lifts crumbs and dust without leaving a trace, though fine sand tends to cling to carpet fibers longer than I’d like. The mop module is a neat addition – a rotating microfiber pad that glides over tile and hardwood. It works best on light spills; heavy grime still needs a manual wipe.

Battery life is decent. A full charge (about three hours) gives roughly 120 minutes of cleaning, enough to cover a 1,500‑square‑foot apartment. When the battery dips low, the robot automatically returns to its charging dock, pauses, and resumes where it left off – a feature that feels almost seamless.

The app deserves a mention. It’s straightforward, showing maps, cleaning schedules, and battery status. I appreciate the ability to set no‑go zones with a simple drag‑and‑drop, though the UI sometimes lags when zooming in on larger maps. Voice‑assistant integration works with both Alexa and Google Assistant, allowing you to start, stop, or send the robot back to base with a quick command.

Now for the downsides. The dustbin is on the smaller side, requiring emptying after every two to three cleaning cycles. Also, while the robot is reasonably quiet, the motor hum is noticeable if you’re in the same room, which might be distracting during late‑night sessions.

Overall, the TCL RM9L delivers a surprisingly capable cleaning experience for its price bracket. It isn’t flawless – no robot vacuum is – but its lidar navigation, easy app, and included mop make it a compelling entry point for anyone looking to dip their toes into smart home cleaning without breaking the bank.