What to check before you buy a used.🤖 5 things decide whether a second-hand robot is a bargain or a brick. 🔋🪫 Battery health, measured not guessed. Lithium-ion packs lose capacity on a fairly predictable curve. A robot vacuum that ran 90 minutes new might manage 45 after three years of daily charging. Ask for actual runtime on a full charge, not the box spec. Then check whether a replacement pack is even sold separately & what it costs. On some models the battery is £40 and ten minutes. On others it isn't user-replaceable at all. 📲 Whether it still gets firmware. This is the one that catches people. Plenty of robots depend on the manufacturer's servers for mapping, scheduling or app control. When a company drops support or goes under, features quietly disappear from a machine that's still physically perfect. Check the current firmware version and whether the model is still supported. 🛞 Parts availability. Brushes, filters, wheels and side modules are consumables. A robot with a healthy spares market stays useful for years. One whose manufacturer stopped making parts is on a countdown, regardless of condition. ⚙️ Wear on the moving bits. Drive wheels flatten, brush bearings seize, mower blades dull, LiDAR turrets get sticky. These are cheap to fix if you know before buying and annoying if you find out after. 📝 Who owned it and why they're selling. An upgrade is a good reason. A persistent fault is not. Ask what the error history looks like and whether the dock and accessories are included as docks are surprisingly expensive to replace on their own. Robots don't have odometers, which is exactly why this information has to come from somewhere. At Robot Autotrader we put this on every listing so you're not guessing.

Nineteen humanoid robots waltzed with human partners at the WorldSkills opening ceremony in Shanghai, and the livestream audience couldn't reliably tell which dancers were which until some robots removed their costumes. The machines are Unitree H2s — 180 cm, about 70 kg, 31 degrees of freedom, with a bionic face whose eyes are cameras. Leg joints deliver up to 360 newton-metres of torque, and onboard compute scales to Nvidia's Jetson AGX Thor at 2,070 TOPS. Three-hour battery. Unitree says the routines ran autonomously in real time, with no remote control. Worth being precise: autonomous here means executing learned choreography and holding sync without a pilot, not improvising. It's still a hard problem — close-contact partner dancing means constant balance correction against a moving human who doesn't follow a script exactly. The reason this matters commercially: every one of those 19 robots is a production unit, not a prototype. Unitree ships in volume, prices aggressively, and has iterated H1 to H2 in under two years. Which is exactly the pattern that creates a resale market. Fast iteration means the previous generation is still fully capable when the new one lands — the H1s that danced at the Spring Festival Gala didn't stop working when H2 arrived. That's the part worth tracking. Our Robot Resale Index sits at 96.4, down 3.6%, and the reason values soften is supply: upgrades push working machines into second-hand circulation. Falling prices aren't a problem if you're buying & reselling on robotautotrader.com

A robot taught itself to play football by playing against itself for 140 years. Skild AI ran it in simulation, then loaded the result into a real body. The clip is autonomous, real time, no pilot. That's a brain, not a machine. And it's the thing worth understanding if you're buying robots. Skild's approach is one model that works across bodies — humanoids, quadrupeds, arms — trained across thousands of morphologies so it doesn't memorise any single piece of hardware. Their demos include robots adapting to a stuck wheel in seconds and walking with a broken leg after a few tries. Which changes what "outdated" means. When the intelligence lives in a model that keeps improving and transfers across bodies, last year's frame isn't obsolete. It's a body waiting for a better brain. So the question when you buy used stops being how old it is, it becomes: what's the battery actually measuring at, what firmware is it on, can you still get parts, and who owned it. All this will be available at Robot Autotrader before you commit to buy.

Meet Predator. Steel-built, six feet of it, and the reason REK billed it as the Final Boss. Frankie LaPenna put Predator on the floor several times this week. Predator got back up every single time, fast & won the fight anyway. The knockdowns are the whole demo. Standing up after a fall is one of the hardest problems in humanoid robotics — the machine loses its balance reference completely, has to work out its own orientation from its sensors, then drive dozens of joints through a push-up while its weight shifts underneath it. Not long ago that meant a harness and a technician walking into the ring. Predator did it over and over, with a person actively trying to keep it down. That's the property that decides whether a robot can work anywhere near people. Falls stop being downtime. And a frame that absorbs that kind of punishment and keeps standing is a frame that's still earning three years from now. Robots like Predator don't wear out. They get replaced. RobotAutoTrader is where the replaced ones find their next owner.

Unitree just started selling a robot hand on its own. $6,500, 22 joints, which is the same size as yours! Every joint is backdrivable -push a finger and it gives instead of fighting you & each one has impact protection built in. Roboticists are calling it much closer to a human hand than anything at this price. But the real news is that it's sold separately. Hands are the hardest-working part of a humanoid and the part that gets replaced most. They get jammed, dropped, outgrown when a lab switches platforms or a newer model ships. Once a hand has its own price tag, it stops being locked inside one robot. It becomes something you can own, swap & sell. Think about who's on each side of that. A research lab upgrading to next year's hand has a working $6,500 component sitting in a drawer. A student team or small startup would kill for one at a fraction of that. Right now those two people have no good way to find each other. That's the gap we are building for with RobotAutotrader.com Robots don't rust & don't rack up mileage. A hand that worked on day one still works when its first owner moves on….it just needs its second owner!!! Sell the one you replaced. Buy the one someone else already broke in. 🦾

A human boxer just fought a six-foot humanoid in a cage in San Francisco. 🥊 The robot is an EngineAI T800, named after the Terminator, first one imported to the US. It wasn't brought here for a factory or a lab. It was brought here to fight. REK's robots are piloted. Humans wear VR headsets & combat controllers and drive the machine in real time. So the fight everyone's calling man vs machine is closer to man vs man wearing a headset. Real Steel, not Skynet. But the part we care most about is that REK is opening a permanent storefront in San Francisco where you can watch robots, take classes on walking & programming them, rent one, buy one, or bring your own in for repairs. That's the whole lifecycle showing up in a single retail space & it's the clearest sign yet that humanoids are becoming things people own, break, upgrade & resell rather than equipment that lives in a factory. Every category that gets a repair shop eventually gets a used market & this is exactly what Robot Autotrader is getting ready for.

UBTECH's new factory in Liuzhou is designed to build a humanoid robot every 10 minutes, using humanoid robots. Cruzr units unload materials, stack them, and move them between stations while collaborative arms handle final assembly. 14,000 square meters, built with Siemens, running on a digital twin they call the smart brain. Walker S and Cruzr series, a stated capacity of 10,000 units a year. The finished robots go into an automated warehouse holding 112 of them in 65 square meters. A building full of humanoids standing in racks, waiting. Here's what that number means. One plant, 10,000 units a year, opened this month. Add Agility, Figure, Unitree, Tesla and AgiBot, and humanoids stop being scarce fast. When supply stops being the problem, the story becomes what happens to the units that get replaced. A Walker S built this year still works perfectly in 2029, whether or not it's the newest thing on the floor. That's what robotautotrader.com is for. Mass production creates the first real generation of used robots, and somebody has to make them findable.

This is the strongest angle: a £999 flagship dropping to £299 in under two years. The Dyson 360 Vis Nav launched at $999. It's now $299.99 on Woot, a 70% cut in under 24 months. That's not a fire sale, that's the normal robot vacuum depreciation curve, and it's the number every used-market seller needs to know before they price their own unit. Here's the bit that matters for owners: independent testing still shows 89%+ pickup on debris and a proper HEPA seal at 99.99%, so the cleaning hardware hasn't aged. What's dragging the resale value down is software: recurring Wi-Fi drop-outs and inconsistent mapping that Dyson hasn't fully fixed since launch. Buyers are pricing in the firmware risk, not the suction. If you're selling a used 360 Vis Nav: don't price off the original RRP, price off what a fixed-navigation robot is actually worth to a buyer today, closer to $250 to $300 territory even in good condition. If you're buying: at $299 the hardware case is strong, but ask the seller to demo a full unattended run on your Wi-Fi network before you hand over cash, connectivity issues don't show up in a five-minute showroom test. Is unreliable navigation software now a bigger driver of robot vacuum resale value than the suction spec ever was?

Seventeen humanoids in one frame. Look at the two ends of that lineup. 👀 Figure 03 shows up twice- same body, once with Helix & once with Helix 2.5. Same hardware, newer brain, listed as a different robot. And that second one is a day old. That's the whole industry in one image. The bodies are converging: two arms, two legs, roughly human height, black or white shell. What changes is the software on top. Which means depreciation here looks nothing like cars. No engine, no rust, no mileage. A frame built last year still lifts what it lifted, and the intelligence arrives by update. Seventeen models now. Next year there will be thirty, and plenty of these will be sitting in storage rooms working perfectly. That's exactly what robotautotrader.com is built for: listing the units that got replaced instead of used up. Sell the one you've outgrown, buy the frame someone else already paid retail for, and let the software catch it up. The upgrade cycle creates the inventory. We just make it findable.

A Unitree G1 in a blue clown wig threw a scripted roundhouse kick at a tourist demo in Xinjiang and caught a boy in the stomach. He wasn't seriously hurt. The clip has 23,000+ posts on it because everyone can see how close it came to being worse: this is a 127cm, 35kg robot with real servo torque, not a toy. Here's the bit that matters if you're actually shopping for one of these: the G1 is a commercial product, not a lab prototype. Universities, robotics clubs and service companies buy them right now, list price starts around $16,000 for the base config. There's no bystander safety certification for humanoid robots doing pre-programmed martial arts routines near the public the way there is for industrial cobots on a factory floor with light curtains and force limits. If you're buying or hiring one out for events, the checklist is simple: confirm there's a physical e-stop within reach of the operator, ask what the torque limit is in "performance" mode versus "safe" mode, and get it in writing who's liable if the choreography goes wrong near a crowd. Should humanoid robots need a certified safety mode before they're allowed to run scripted routines near untrained bystanders, same as cobots already do on factory floors?

Odyssey just showed one AI model controlling robots, humanoids, cars & drones. Same brain, different bodies. That's bigger news for used robotics than anything else so far this year. Right now a robot's value is bundled- it’s hardware plus whatever intelligence shipped inside it. Split those apart & the body is just actuators, sensors & a frame. Software depreciates. Steel doesn't. Buy the body secondhand at robotautotrader.com. Let the intelligence arrive by update.

Agility Robotics launched Digit 5 today. The spec that matters isn't the 50-pound lift or the 90-minute battery with nine-minute recharges. It's that it works without a safety cage. That's the thing that's been holding humanoids back. Caged robots need floor space, fencing, and a workflow built around them. A robot that detects and avoids people just walks into the building you already have. Agility's got over $300 million in booked orders, 30-plus customers, and one contract for around 1,000 units. It also has swappable end effectors — the hands come off and change depending on the job. Here's the part worth watching for anyone in the resale market. Agility doesn't sell Digit. It rents them, bundled with software and maintenance. No sticker price. That model creates the secondhand supply eventually. Fleets get refreshed, contracts end, and thousands of units with real service history come off lease at once — plus a parts market in end effectors, since those are designed to be swapped anyway. A used robot with 65,000 fleet hours behind its software isn't a worse robot. It's a proven one. robotautotrader.com is where that market goes when it arrives.

China just showed off a robotic golden arowana that swims like the real thing. The BG-5 mimics the dragon fish's scales, fins, and tail using fluid-motion propulsion. No propellers. It navigates on its own, dodges obstacles, and carries cameras for underwater monitoring. It's on display at CIFTIS in Beijing through September 13 & the crowd reaction wasn't about marine science. It was about the pet. A real golden arowana upkeep runs tens of thousands of dollars & it can die from a bad water change. This one is $5k, doesn't eat, doesn't get sick & doesn't need a tank cycled. That's the shift worth watching. Every category of robot that goes mainstream starts as a spectacle & ends up as inventory. The secondhand market comes next. It always does. That's what robotautotrader.com is for. Sell yours before the next launch, buy somebody else's after it.

Around 30 humanoid & quadruped robots just staged the world's first robot protest, marching outside Poland's Digital Affairs Ministry in Warsaw. Loudspeakers played "Defend workplaces," "Time for rules," & "Don't wait, regulate," as robots waved flags & carried signs. The event was organized by Democratism, whose founder Grzegorz Kuliś also happens to own Delta Robots, the company that supplied the machines. Poland's Digital Affairs Minister actually came out to speak with the crowd, confirming Poland is already implementing the EU AI Act, including a new AI oversight commission. Kuliś's warning: "The vast majority of 'migrants' will arrive either via undersea cables as AI agents, or as humanoid robots in shipping containers from China." Robots protesting robots taking jobs isn't satire anymore. It's an actual policy demonstration & it happened in Warsaw this week. Once robots are common enough to march in the streets, they're common enough to need a resale marketplace like Robot Autotrader!

Hospitality robots: 42,000 units sold in a year. Delivery trolleys, cleaning machines, front-of-house units. Businesses that automate refresh their fleets on schedules, and those schedules feed a used-equipment trade that barely exists yet.

The best time to build the trusted place to buy and sell robots was before the wave. The second best time is now, while "used robot vacuum" is still a search with no good answer. That is the gap we exist to fill.

Robot vacuum-mop combos have compromised on both jobs for years: weak suction with the mop pad down, or soggy floors when the mop's along for a vacuum run. iRobot's fix in the Roomba Duo (2026): a mechanical arm at the dock that physically deploys one of two separate robots, a vacuum or a mop instead of bolting both jobs onto one chassis. That's a mechanical change, not a firmware update, and it changes what "flagship" means for this category. For owners running an older i7 or Combo model, this is the first real reason in two years to think about trading in rather than waiting for another software update. For buyers, expect current Combo units to soften in price once Duo stock actually lands, secondhand listings tend to move within a few weeks of a launch like this. If you're eyeing a used unit right now, check dock condition and mop pad wear closely, the whole pitch here is reliability at the dock, which is exactly where two-in-one machines usually start failing first. Does splitting vacuum and mop into two robots actually solve the compromise, or just move the failure point to the arm?