Renogy 400W Solar Blanket review
Renogy 400W N-Type Portable Solar Panel Blanket (RSP400SB)
By Tom Calder
Renogy's 400W blanket folds to 16.5 x 15.8 x 4.1 in and weighs 16.09 lb by the maker's figures, light for its rating. It has an MC4 connector and a 39.2V open-circuit voltage, so check that against your power station's solar input limit before connecting it. Renogy notes that the 400W rating is measured at STC and that real output below 400W is normal.
- Best for
- Light 400W folding panel with MC4 output
- Skip it if
- Your power station's solar input limit is below 39.2V, or the station has no MC4 input and you do…
as of Nov 14, 2026, 5:36 PM ET · Details
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Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
What we like
- 16.09 lb for a 400W rating (maker)
- Fold setting for 300W, 200W or 100W (maker)
- MC4 output, 2-year warranty
Worth knowing
- IP65 splash-proof, not for soaking
- No USB port on the 400W
- 39.2V Voc can exceed small stations' limits
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Who shouldn't buy this
Don't buy it if your power station's solar input limit is below 39.2V, or the station has no MC4 input and you do not want an adapter cable.
Key specs
| Rated power | 400 W |
| Efficiency (maker) | — |
| Weather rating | IP65 splash-proof (maker) |
This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the US price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.
If this isn’t the one
Best for The most watts in one folding panel
Best for 22 lb bifacial 400W panel
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Best for Large 500W folding panel for big stations