You can mix and match components from different manufacturers. The TriMetric, the Victron BMV, or another battery monitor of your choice will all get the job done. It’s more important to have a “shunt” type battery monitor to give you correct info as to what is going into your battery as far as “charge” and what you have used or “discharged” from your battery over a period of time. Staying with one “brand” will sometimes make communication between different components easier and more user friendly and in some cases you get some added functionality.