Not trying to offend anyone here, but from what I see advertised as “solar generators” , they usually aren’t telling the whole truth. Selling you a 2000, 3000, or even a 4000 watt inverter sounds impressive as hell. The screw job is in the 100 amp-hr battery they are selling you with it. Assuming conventional battery technology, you are advised to only discharge to max 50%. So now we are down to 50 amp-hrs capacity at 12 volts. That only translates to 5 amp-hrs at 120 volts. 5 amp-hrs may run some LED lights for a good while, but it isn’t going to run anything with a motor for very long. Think pellet stove, fridge, pump, or freezer. I’m not saying these systems are totally useless, but buyer beware.
Then on the charging side, look at panel capacity. Solar panels never put out rated capacity. And they are only at max capacity few a few hours daily at local noon assuming sunny conditions. So beware. It may take you solar generator kit panels a couple of days to recharge your battery with the supplied panels. And that is assuming you aren’t using the batteries to power anything while recharging.
So I’m not saying all solar generator kits are bad or useless. I’m just saying do your homework and know exactly what you are buying. Years ago I looked into buying a Harmon battery backup system for my Harmon pellet stove. The setup was very expensive and would only keep the stove running for a few hours. It wouldn’t even power the stove thru the night.
So do your homework and fully understand what you are buying.