My own actual build. I recently fitted a 300ah LiFePO4 battery running parallel with 340ah of lead acid. They’re charged with a 75amp alternator and 800 watts of solar. They complement each other perfectly. The LiFePO4 does most of the work, with the lead acid just sitting there on float for the majority of the time and taking the current from the alternator once the LiFePO4 is fully charged. I’m no electrician, but a hybrid system like mine is really simple to set up and can just be left to do it’s thing, with the batteries built in BMS looking after the LiFePO4 preventing over or undercharging. I also have a lead acid starter battery, also charged from the alternator, through a split charge relay. Hope this helps.
I agree. My new A127 75amp alternator puts round about 50amps into my hybrid bank. Since I’ve started learning about batteries / 12 volt electrics / methods of charging etc, it’s become a bit of an obsession! An enjoyable one though 😊