Comment by pandaman

Action cameras seem to have less than a 2h run-time though. One could argue that a replaceable battery is a desired feature on such a device as many users of these cameras participate in activities lasting much longer. They also tend to have replaceable memory for the same reason. And it all is achieved without EU directives as far as I know, just from the pure market demand.

PS. Consumer surveillance cameras, on the other hand, don't have replaceable batteries in general, as they can operate indefinitely off a small solar panel or for months on a charge.