Will a 400 W panel keep my house up during a hurricane?

No. Landfall is clouds and debris. A folding 400 W panel is a recharge tool after the sky clears — often 1–2 kWh on a good day, not a house.

Can I use any solar panel on these batteries?

Only inside the voltage and connector window on the host page. F3800 Plus lists 11–165 V, 1,600 W per input, 3,200 W total. DELTA 3 lists 11–60 V, 500 W. Over-voltage can damage the port.

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How-to · after-the-storm recharge

How to use solar with a home backup battery

Solar does not replace a full charge from the wall before a forecast outage. It extends day two if the sky actually clears. Size the panel to the battery you own.

Kit order: battery, extra pack, then solar

Charge from the wall first Every system on this site can refill from AC. Do that 24–48 hours before a named storm. Solar is plan B after the weather passes.
Read the host’s voltage window, not the panel’s marketing watts EcoFlow DELTA 3: 11–60 V, 500 W. DELTA 3 Plus: two 500 W ports. DELTA 3 Ultra Plus: up to 1,600 W PV. Anker C2000 Gen 2: 11–60 V, 800 W. F3000: 2,400 W dual input. F3800 Plus: 3,200 W (11–165 V). AC200L: 1,200 W. Exceeding voltage is how ports die.
Prefer the brand’s own folding panel the first time EcoFlow 400 W lists $699 (EcoFlow US, 25 Oct 2026). Anker sells 400 W kits next to F-series units. Bluetti lists 200 W and 350 W bundles on the AC200L page. Third-party panels work only if you own the adapter and the math.
Aim, keep it dry, and expect less than the sticker A 400 W folding panel in real weather is often a 1–2 kWh day — enough to offset a fridge, not a heat pump. IP ratings on the panel do not make the battery waterproof. Keep the station itself out of rain.
Do not feed rooftop solar into a portable during an outage unless the maker says so Anker’s F3800 Plus FAQ says you cannot recharge from rooftop solar through the Home Power Panel during an outage — connect 11–165 V panels directly. Ultra X + SHP3 is a different, documented path.