Device and method for use with unmanned aerial vehicles

An autonomous battery replacement station (10) for an unmanned aerial vehicle (UAV) (100) having a replaceable battery, the station comprising: a landing platform (20) for receiving the UAV; a storage location (30) for storing a replacement battery (35) for the UAV; and a means for swapping the existing battery on the UAV, when the UAV lands upon the landing platform, with a replacement battery from the storage location.