It depends entirely on whether you are running heat or cooling. Everything else in a trailer is smaller than people expect.
Do the arithmetic first
A 12V compressor fridge draws roughly 40 to 60W while the compressor runs, which over a day works out around 400 to 600Wh. Lights, the water pump, phone and laptop charging add perhaps 200 to 300Wh. So a typical trailer, with no air conditioning and no electric heat, lands somewhere between 600 and 900Wh a day.
The Explorer 1000 v2 listing states 1,070Wh of capacity. That is roughly a day and a half of the load above, or a comfortable weekend if you are also driving and topping it up.
What will flatten it quickly
- Rooftop air conditioner. Draws roughly 1,500W running. Even where the inverter copes, 1,070Wh is well under an hour.
- Electric heaters and kettles. A 1,500W heater is at the station's stated output ceiling and will empty it in about 40 minutes.
- Residential fridge on electric. Far heavier than a 12V compressor unit.
If any of those is the reason you are shopping, a 1kWh station is the wrong size and no amount of solar fixes it.
The two upgrades worth considering instead
If you want more runtime, the Explorer 2000 v2 listing states 2,042Wh and 2,200W with 4,400W surge, which roughly doubles the margin.
If you would rather start here and grow, look at the HomePower 1000 Plus v2 instead of the Explorer 1000 v2. The listing states the same 1,024Wh class but 1,800W rated output, and unlike the Explorer it expands to 11kWh with additional battery packs. The Explorer 1000 v2 does not expand at all, which is the single thing most buyers regret later.
The cheaper fix most people miss
Capacity is only half the system. If the trailer moves every couple of days, a DC-DC alternator charger refills the station while you drive. Our Jackery unit is rated at 600W from a 12V or 24V vehicle, which Jackery describes as roughly 1kWh for every two hours of driving and about six times what a cigarette lighter socket manages. For a touring trip that is often worth more than buying a bigger battery.
Tell us your fridge type and whether air conditioning is on the list, and we will size it properly.