… Details $450 at Amazon Ecovacs Deebot T30S Pro: $319 Formerly topping our list of favorite robot vacuums , this model has up to 350 minutes of runtime, up to 11,000 Pa of suction power, hot-water mopping, and a base station that lets it empty itself, refill the built-in tank, and return to hot-air … …
… If the vacuum isn't holding a charge as it used to or the runtime has significantly plummeted, it's time to consider a replacement." In addition to the issues Wu mentioned, the unit's overall efficiency and suction power may degrade as it approaches the two- to three-year mark. …
… We're watching laptop manufacturers push the envelope on how long a device stays running -- multiple powerful computers are able to stay powered for more than 24 hours at a time now. …