I am wondering if the Charger 1 can be hoked up to charge a 12V lifepo4 battery. I guess only if you lower the Charger 1 Voltage to a proper one for the 12V battery?
Or perhaps hooking to an MPPT then to the 12V battery?
Cannot find much info on this…and I was wondering if this Charger 1 can be used like this.
NO - The minimum output voltage of Charger 1 is 26VDC, it will destroy any 12V battery. It is not a battery charger as such, it is a variable voltage, constant current power supply, designed to charge power stations as their voltage is at least a nominal 24VDC or higher and they have their own inbuilt MPPT.
It may work from something like a Victron MPPT i.e. a 75V-15A or a 100V-higher amp, then to a battery. But at your own risk.