It could be a silly one, still learning.
Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.
It will treat them as a single battery and charge both together. Be careful to separately charge both fully before connecting in parallel, otherwise you'll get some fireworks.
32 People are following this question.
Multiplus stays in absorbtion mode for over 12 hours with high voltage and 0 or low current
Quattro 24/5000/120 with 240V split-phase input
RV Inverter Upgrade: 12v vs 24 Inverter
Quattro will not stay in "charge" mode longer than 3 seconds
Voltage Spikes, System Failure, MultiPlus Absorption Transition During Charging LiFePO4