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Seauto SAT 40 Cordless Robotic Pool Vacuum: 240-Minute Runtime, AI Sonar Navigation and Waterline Cleaning - What It Takes Off Your Hands, and What It Does Not
A robotic pool cleaner takes over the job you would otherwise do with a pole, a brush and a vacuum head on a hose. The SAT 40 is a cordless unit that drops into the water, drives itself around the floor and walls using AI sonar navigation, and also cleans along the waterline where a manual session usually gets skipped. The headline figures are a 240-minute runtime, a 10,400mAh battery that the listing describes as replaceable, 320W of suction with 120 GPM flow, IPX8 sealing, dual filtration and coverage quoted up to 3,200 sq ft - which suits most domestic pools. What it does not do matters just as much. It is a cleaner, not a chemist: it will not clear green water or an algae bloom, and it works far better on a pool that has already been sanitised and balanced. Someone still has to lift it out, empty and rinse the filter basket after every run, and recharge it - cordless means no tangled cable, but also no docking station that recharges it by itself. It will do a waterline pass, but heavy debris such as large leaves and twigs is better netted out first, and steep narrow steps or a badly wrinkled liner can trap any robot. Confirm with the seller the runtime and coverage for your pool size, whether the battery is genuinely user-replaceable, what the warranty covers and which filter media is included, and check your pool's shape and depth against the stated working range before relying on it for weekly upkeep.
