I am at the early stages, have a portable solar (200W), Lead acid 12v and ecoworty PWM controller. looking at the MPPT solar and DC to DC together with a LiFePo4 battery (spec to be decided). My van also has EHU charging for the LEad Acid. When I go to LiFePo4 what charger do I need that would be compatable with MPPT, or does it not matter, and how does the MPPT behave if the battery is being charged by another source? I can see the MPPT will not back charge the vehicle battery from the leisure battery or Solar which meets my requirements but don't want to damage it when on EHU. The MPPT appears not to have any way to monitor the charging of the battery from van or solar. There appears to be a blue tooth MPPT, however, that looks like it does offer moniotring through an app, but does not appear to support DC to DC.
