for anything that large you will need a large panel. I have a 220ah lifepo4 and 312ah li-ion batterybanks and a 240 watt panel was struggling to charge them up in winter, both banks where at about 10 percent for months.
After I upgraded to a 365 watt panel, I was able to get both banks up to 100 percent in about 7 days of winter sunshine.
In summer the 365 watt panel can put over 130ah of power back into the battery every day.
If you have small panels and use the goal zero alot, you might need the generator to charge it back up especially in the winter.
A 365 watt panel or larger are huge beasts, it took up almost the whole roof, but it was worth it, I max out at over 27ah of charge power when the sun is overhead.
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