Robotics
Battery life (robot)
A robot's battery life is how long it runs on one battery charge. For a bipedal humanoid, it is counted in hours and depends heavily on use: continuous walking consumes far more than a static posture.
Updated on 12 October 2026 · Libella Robotics · Also known as: robot battery life, robot battery, run time
An advertised battery life rarely matches a real booking. Two hours of mixed use can become one hour of sustained walking with choreography. That is why serious services reason in terms of effective presence time rather than raw battery life.
The operational answer is the quick battery swap: a few minutes' interruption is enough to start again on a full charge. A supplier who turns up with a single battery cannot last a full day at a trade show, whatever the spec sheet says.
When reading a quote, the useful question is therefore not “what is the battery life?” but “how much effective presence time will the robot provide, and with how many batteries?”.
Key facts
| Unitree G1 | ≈ 2 h (9,000 mAh, quick swap) |
|---|---|
| Main factor | Continuous walking vs static posture |
| The right question | “How much effective presence time?” |