A BATTERY MANAGEMENT SYSTEM

A battery management system, comprising: a battery pack enclosure that contains: a master controller and a plurality of slave controllers. Each of the plurality of slave controllers is configured to communicate wirelessly with the master controller using their respective antennas over one of a plurality of wireless channels. The battery management system further comprises: a remote antenna, which is located remote from the master antenna such that it is less shielded by the battery pack enclosure to interference that is external to the battery pack enclosure; and a controller that is configured to: receive signalling from the remote antenna and process the signalling to determine a level of interference in the plurality of wireless channels; and based on the determined level of interference in the plurality of wireless channels, select one of the plurality of wireless channels for wireless communication between the master controller and the plurality of slave controllers.