1 Greenmagic portable solar panel ranked. Each one is scored and ranked against every brand in its size, so "#3 mid-size" means third of all mid-size solar panels here, not third among Greenmagic's own.
The Greenmagic 400W Portable Foldable Solar Panel (GM400B) is Greenmagic's only current portable solar panel here, ranked #5 of 14 large and rated 4.3. It has no independent output test yet.
A low-cost 400 W folding panel for owners of large power stations who camp by the car or RV. The thin spec sheet means checking a station’s voltage limit before buying.
Amazon $322.99Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
A low-cost 400 W folding panel for owners of large power stations who camp by the car or RV. The thin spec sheet means checking a station’s voltage limit before buying.
Amazon $322.99