If I have an existing inverter and battery and install a libbi alongside it, can the libbi controller be connected up to control both systems? Sophie Burgess 02 February 2023 10:49 Updated No. The controller can only be used to control one battery system, specifically the libbi with which it is supplied. Related to libbi inverter controller existing inverter 3rd party battery Related articles Does the libbi work in conjunction with solar optimisers? Can the battery system be added to the PV set up I already have, without swapping the inverter? Can I fit only libbi batteries to an existing inverter? Does libbi work with microinverters? How does libbi integrate with the rest of the myenergi eco-system? Comments 0 comments Please sign in to leave a comment.