What if a hired robot fails at your event? Plan B…

If a hired robot fails on the day, what happens next depends almost entirely on what you agreed beforehand: whether there is a spare unit or battery, how quickly the operator can recover it, what the fallback programme is, and what you pay if it cannot run at all. Failures are a normal risk with today's robots rather than proof of a bad supplier, so plan for them as you would for a speaker who misses a flight.

How robots fail at events

Current robots are impressive but not yet reliable in the way a projector is. When Beijing staged a half-marathon for humanoid robots in April 2025, only four of the 21 robot runners finished within the four-hour limit, according to Bloomberg's report published by Fortune; one fell at the start line. A race is far harder than a trade-show stand, but it shows how often today's machines stop. The common failure modes at events are more mundane:

Falls. Bipedal robots can fall. humanoid4rent's safety guidance advises assuming a fall in the worst direction and keeping that area clear.
Battery. Unitree lists about two hours of battery life for the G1. NAO's support pages give 45 minutes to two hours depending on use, with two hours for a full charge. Boston Dynamics lists an average runtime of 90 minutes for Spot and a 60-minute recharge. Pepper's battery charges only when the robot is powered off and plugged in.
Crowds. humanoid4rent's safety guidance names a crowd closing in as the most common cause of an emergency stop.
Venue conditions. The pricing guide lists floor surface, ramps, lifts, power, Wi-Fi congestion and lighting among the conditions that affect crew time, and the safety page notes that cable mats, deep carpet and polished stone change how legged robots walk.
Content and software. A new routine that has never run in the actual venue, or a feature that depends on an internet connection.
Logistics. Damage in transit, a delayed van, or a missing charger.

What to agree before the event

humanoid4rent's safety checklist includes an agreed failure plan covering what happens if the robot cannot run, and its pricing guide suggests asking every supplier what happens if the robot fails on site, whether there is a spare and what the remedy is. Turn those questions into written answers:

Spare capacity. Is a second unit on site, on call, or not available? How many spare batteries come with the robot, and where will they charge? See battery life at events.
Recovery time. How long does the operator need to restart after a stop, a battery swap or a fall? Who decides whether the robot runs again after a fall?
Fallback programme. A video loop on the stand screen, a static photo point with the robot, a presenter script, or a second format the supplier can switch to.
Rehearsal. A run-through in the venue, on the real floor, with the real network, before doors open.
Remedy. What you pay if the robot cannot perform at all, if it performs part of the time, or if a replacement arrives late. Write it as numbers or percentages, not as goodwill.
Liability and insurance. Who is liable for damage to people, the venue and the robot, and what the supplier's insurance covers. humanoid4rent does not provide, arrange or verify insurance; ask for the certificate and read the exclusions, and see insurance and liability.

These terms matter because the contract is between you and the supplier. humanoid4rent is not a party to it and does not guarantee that a deployment will succeed, so the remedy has to be in your agreement with the supplier. Raise it while you compare quotes, not after you book: see comparing robot hire quotes and cancellations and change orders.

On the day: a simple sequence

Stop and secure. The operator brings the robot to a safe state; your staff keep visitors back. Your staff should already know where the emergency stop is, as the safety checklist recommends.
Diagnose. Battery, network, mechanical damage after a fall, or software. The operator should be able to say which within a few minutes.
Decide against an agreed time limit. Fix in advance how long you will wait before switching to the fallback, so nobody improvises in front of the audience.
Switch to the fallback. Start the video, move the presenter, or turn the robot into a static photo point if it is safe.
Inspect before restarting. After a fall, the operator decides whether the robot is fit to run again; do not pressure them.
Record what happened. Time, cause, duration, photos and who decided what. You will need this to agree the remedy, and the supplier will need it for their own records.

Telling the audience

Keep it short and honest. A presenter line such as a quick note that the robot is taking a break, followed by the fallback, works better than silence. Do not pretend a breakdown is part of the show: humanoid4rent's safety guidance stresses that audiences must not be misled about what a robot is doing, and the same applies when it stops.

Checklist

Failure plan agreed in writing, including the fallback programme.
Spare unit or spare batteries confirmed, with a charging location.
Recovery times and the decision time limit agreed.
Rehearsal slot in the venue before doors open.
Emergency stop location and operator position known to your staff.
Remedy for no-show, partial performance and late replacement written into the contract.
Insurance certificate received and read.
Incident log template ready for the day.

If reliability is critical, say so in your request and ask suppliers to quote both with and without a standby unit.

FAQ

Do I get my money back if the robot does not work?

Only on the terms in your contract with the supplier. The platform is not a party to that contract and does not guarantee performance, so agree the remedy for no-show and partial performance before you book.

Is it worth paying for a spare robot?

It depends on what is at stake. For a single stage moment watched by hundreds of people, a standby unit or at least spare batteries can be cheaper than a failed reveal; ask suppliers to price both options.

What should happen if the robot falls near visitors?

The operator stops the robot, staff keep people back, and the venue's incident procedure applies if anyone is hurt. A clear zone sized for a fall in the worst direction is the best prevention.

Can bad Wi-Fi make a robot fail?

It can, if control, speech or content depends on the network. Ask the supplier which functions work offline, test on the venue floor, and plan the fallback for the rest.

Sources

How this guide was made: prepared with AI assistance; every factual statement was checked against the sources listed above on 12 October 2026. Spotted an error? Write to info@humanoid4rent.com.