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In stock · ships in 1-4 days
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In stock · ships in 1-4 days
ECO100 $100 off $1,500+
In stock · ships in 1-4 days
The 400 w solar panel is the most common single size in residential and off-grid solar today, because it hits a practical balance: enough output that four panels run a cabin or a small home's essentials, and a frame two people can lift onto a roof. This collection groups everything at or near 400W, which means three different product types: rigid framed modules for roofs and ground racks, folding portable panels for power stations, and pallet-quantity modules for larger installs.
Seven products from Anker, Sungold Power, Rich Solar and EcoFlow are listed, priced from $469 for a single rigid panel to $2,599 for a pallet. Ratings run from 400W to 440W per panel, with cell efficiencies between 22.4% and 25% and warranties from 2 years on folding panels to 30 years on the Sungold Power N-type module.
| Product | Key numbers | Best for | Price from |
|---|---|---|---|
| Anker SOLIX PS400 400W Portable | 400W, 48V, 23%, 2-year warranty | Recharging a power station at camp | $700 |
| Sungold Power 440W N-Type | 440W, IP68 junction box, UL61730, 30-year warranty | Home, cabin or hybrid arrays in any quantity | $885 |
| 2 x Anker SOLIX 440W Rigid Set | 2 x 440W = 820W, 25% efficiency, 25-year warranty | RV roof or small off-grid pair | $1,000 |
| Rich Solar MEGA 400W 24V (pallet) | 400W, 108-cell, 23.2%, 45.2 lb, 25-year output warranty | Grid-tie or off-grid arrays of many panels | $2,599 |
What is the best 400w solar panel for an RV roof? The 2 x Anker SOLIX 440W rigid set gives 820W from two modules at 25% efficiency, which uses roof space well. For a trailer that parks in shade, the folding PS400 you carry into the sun is the better companion.
How many 400W panels for a cabin? A cabin using 3,000Wh a day typically needs three to four 400W-class panels in most of the mainland US, more in the north in winter. The calculator gives a number for your ZIP code.
Are 400w solar panels for sale here suitable for grid-tie? The Rich Solar MEGA 400 is listed as grid-tie and off-grid compatible, and the Sungold Power 440W as on-grid, off-grid or hybrid. The folding PS400 is for power stations only.
Every panel here ships free to the mainland US from our brand partner warehouses, usually within a few business days, with 30-day returns. Call us if you want help choosing between a rigid pair and a full pallet.
