How much power does the SP400 actually deliver?

It is rated at 400W from monocrystalline cells with up to 23.5% conversion efficiency. Real output depends on sun angle, shade and temperature, so expect less than the rating in anything but clear direct sun.

Which power stations can it charge?

It is meant for heavy-duty portable power stations with a solar input rated near 400W. Check your station's maximum solar input and connector type before buying, since a smaller input caps what the panel can deliver.

Is it really portable?

It folds for carrying and storage, but a 400W panel is large and heavy when unfolded. Treat it as vehicle-transported gear for RV, tailgate and backup use rather than something to carry far on foot.

Can it run an AC unit or a grill?

It does not power appliances directly; it charges a power station, which then runs the load. An AC unit or electric grill needs a station with enough output and battery capacity to match.

Does it work in shade or on cloudy days?

Output falls sharply when any part of the panel is shaded or the sky is overcast. Keep it angled toward the sun and clear of shadows for the best charge rate.

What comes in the box?

Expect the folding panel itself with its built-in cable and connector for a power station. Confirm the connector type matches your station, since adapters may be needed.

What do buyers say about the CTOLITY SP400 400W Foldabl Portable Solar Panel?

Rated 5 out of 5 from 3 ratings.

CTOLITY SP400 400W Foldabl Portable Solar Panel

Best price now

$243.71at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

CTOLITY SP400 400W Foldabl Portable Solar Panel

Best price now

$243.71at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $243.71 at Walmart on Nov 9.

Our take on the CTOLITY SP400 400W Foldabl Portable Solar Panel

The CTOLITY SP400 is a foldable 400W solar panel built from monocrystalline cells rated at up to 23.5% conversion efficiency. It is aimed at recharging large portable power stations for RV trips, tailgates and home backup rather than at trickle-charging phones. At 400W it sits in the high-output class of folding panels, where rivals such as Jackery, EcoFlow and Bluetti compete on the same efficiency and portability trade-offs. Buyers should expect a panel this size to be bulky and heavy when folded, and to need real direct sun to hit its rating.

Best forRV and van owners running an AC or fridgeTailgates and camping with a large power stationHome backup during outagesOff-grid cabin and job-site power

Pros

High 400W output for large power stations
Monocrystalline cells rated up to 23.5% efficiency
Folds for transport and storage
Quiet, emission-free alternative to a gas generator
Suits high-draw loads like a TV or electric grill

Cons

Large panels need direct sun and careful aiming
Heavy and bulky compared with smaller folding panels
Output drops sharply in shade, clouds or off-angle light
Needs a compatible high-input power station to use the full 400W

CTOLITY SP400 400W Foldabl Portable Solar Panel prices at every store

WalmartNew
In stockSold by CTOLITYReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$243.71Free shippingChecked Nov 9
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About the CTOLITY SP400 400W Foldabl Portable Solar Panel

The CTOLITY SP400 is a foldable portable solar panel with a 400W output. It is built with monocrystalline solar cells and has a conversion efficiency of up to 23.5%. It is used to recharge portable power stations.

It works as a quiet alternative to a gas generator.

Power: 400W
Cell type: Monocrystalline
Efficiency: Up to 23.5%
Design: Foldable, portable
Use with: Portable power stations
Color: Black

Specifications

color: BlackSource

Questions and answers

How much power does the SP400 actually deliver?: It is rated at 400W from monocrystalline cells with up to 23.5% conversion efficiency. Real output depends on sun angle, shade and temperature, so expect less than the rating in anything but clear direct sun.
Which power stations can it charge?: It is meant for heavy-duty portable power stations with a solar input rated near 400W. Check your station's maximum solar input and connector type before buying, since a smaller input caps what the panel can deliver.
Is it really portable?: It folds for carrying and storage, but a 400W panel is large and heavy when unfolded. Treat it as vehicle-transported gear for RV, tailgate and backup use rather than something to carry far on foot.
Can it run an AC unit or a grill?: It does not power appliances directly; it charges a power station, which then runs the load. An AC unit or electric grill needs a station with enough output and battery capacity to match.
Does it work in shade or on cloudy days?: Output falls sharply when any part of the panel is shaded or the sky is overcast. Keep it angled toward the sun and clear of shadows for the best charge rate.
What comes in the box?: Expect the folding panel itself with its built-in cable and connector for a power station. Confirm the connector type matches your station, since adapters may be needed.
Where is the CTOLITY SP400 400W Foldabl Portable Solar Panel cheapest?: At Walmart, for $243.71, as of our latest check.
What do buyers say about the CTOLITY SP400 400W Foldabl Portable Solar Panel?: Rated 5 out of 5 from 3 ratings.