I put a Cyrix-Li-Ct between starting (lead acid)and house batteries (LFP). But the Cyrix never connect the two batteries even when the alternator and the starting battery is at 14.4V!!! Same thing if the house battery is at 14.4V by the Victron MPPT on solar panels.
Of course when I push on the "start assist" the Cyrix connect for 30 seconds.
As my LFP battery is not Victron's one the BMS is hidden inside, so I cannot connect the BMS on the Cyrix-Li-Ct!
Any chance to fix this problem?