How long does an inspection robot's battery last?
Industrial systems typically achieve two to four hours of operating time per charge, more compact models one to two hours.
These figures are laboratory values. In practice they are reduced by payload, gradients, low temperatures and frequent stopping. Anyone comparing manufacturer specifications should pay attention to the test condition – a value that does not state payload and ground is not comparable.
For continuous operation, the runtime matters less than whether the system returns to the charging station on its own. This turns a limited runtime into uninterrupted operation.
How long charging takes and whether the battery can be swapped is covered under How long does charging take?.