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Deal.ai › Kepeak › Solar Panels
Kepeak
Kepeak 40W/18V Mini Solar Panel with USB Ports & DC Output

Kepeak 40W/18V Mini Solar Panel with USB Ports & DC Output

4.3(12 ratings)

Best price now

$24.99at WalmartChecked 3 h ago

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Price facts

  • Lowest price today: $24.99 at Walmart (checked Nov 15, 2026).
  • Checked at 2 stores.

Our take on the Kepeak 40W/18V Mini Solar Panel with USB Ports & DC Output

The Kepeak is a small monocrystalline solar panel with USB and DC outputs, built for charging phones, power banks, 12V batteries and small outdoor gear. It folds flat at 27 x 22 cm and weighs little, so it packs easily for camping or emergency backup. The IP67 junction box and -40 to +85°C operating range suit outdoor use. It is a trickle charger, not a rooftop panel: expect slow charging and modest output in real sun.

Best forCampers and hikers topping up phones and power banksKeeping a car or 12V battery topped upPowering small LED lights or a surveillance cameraEmergency backup at home
Pros
  • Monocrystalline cells with USB and DC outputs
  • IP67 junction box and wide -40 to +85°C range
  • Compact and thin at 27 x 22 cm
  • Includes battery clip, car charger, OBD cable and suction cups
Cons
  • Real-world output falls well short of the headline wattage
  • Slow charging for larger batteries
  • Small size limits how much it can collect in low sun
  • No built-in stand; relies on suction cups or propping

Kepeak 40W/18V Mini Solar Panel with USB Ports & DC Output prices at every store

  • WalmartNew

    In stockSold by SHUDAN Tech LimitedReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $24.99Free shippingChecked 3 h ago
    Visit Walmart
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $55.99Free shippingChecked 3 h ago
    Visit Amazon

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission.

Kepeak 40W/18V Mini Solar Panel with USB Ports & DC Output price history

Lowest price we've seen: $24.99 on Nov 15 at Walmart. Tracked across 2 stores since Nov 15.

What reviewers say

  • 4.3 / 512 ratings

Ratings are positive overall, with buyers treating it as a handy small panel for trickle charging and camping. Complaints center on output being lower than expected in real conditions.

What people mention
  • OutputMixedBuyers say it charges, but slower and weaker than the wattage suggests.
  • PortabilityPraisedOwners like how thin and light it is to pack and move.
  • AccessoriesPraisedThe included clips, cables and suction cups are seen as useful.
  • Charging speedCriticisedReviewers note it takes a long time to charge larger batteries.

About the Kepeak 40W/18V Mini Solar Panel with USB Ports & DC Output

This is a compact monocrystalline solar panel with USB and DC outputs. It measures 27 x 22 x 0.2 cm.

The junction box has an IP67 rating, and the panel operates in temperatures from -40°C to 85°C. It can be used with mobile power banks, 12V batteries, car batteries, surveillance cameras and LED lights, and in gardens and other outdoor settings.

The kit includes a battery clip, a car charger, an OBD car charging cable and four suction cups.

Type
Monocrystalline solar panel
Material
Monocrystalline
Color
Black
Output
USB and DC
Dimensions
27 x 22 x 0.2 cm
Open-circuit voltage
5V-18V
Short-circuit current
2A-0.5A
Junction box
IP67 rated
Operating temp
-40°C to 85°C
Suitable for
Mobile power, 12V battery, car battery, surveillance camera, LED lights, garden, outdoor use
In the box
1 x solar panel, 1 x battery clip, 1 x car charger, 1 x universal manual, 4 x suction cups, 1 x OBD car charging cable

Specifications

color
BlackSource
Solar panel peak wattage
30 W
Solar panel type
Monocrystalline Solar Panel
Brand
Kepeak
Solar panel power voltage
18 V
Solar panel amperage
2 A
Mount type

Questions and answers

Can it charge a phone directly?
Yes. It has USB output, so it can charge a phone or power bank in good sunlight, though slowly.
Will it charge a 12V car battery?
It can trickle charge a 12V battery using the included battery clip, but it is slow and best for maintenance, not jump-starting.
Is it waterproof?
The junction box is rated IP67, so it handles rain and dust. The panel itself should still be kept out of standing water.
What comes in the box?
The panel, a battery clip, a car charger, an OBD charging cable, four suction cups and a manual.
Does it work on cloudy days?
It produces some power in diffuse light but far less than in direct sun. Expect very slow charging under cloud.
Where is the Kepeak 40W/18V Mini Solar Panel with USB Ports & DC Output cheapest?
At Walmart, for $24.99, as of our latest check.
What do buyers say about the Kepeak 40W/18V Mini Solar Panel with USB Ports & DC Output?
Rated 4.3 out of 5 from 12 ratings.
Where can I buy the Kepeak 40W/18V Mini Solar Panel with USB Ports & DC Output?
2 stores we checked sell it, including Walmart, Amazon.

Stores we've priced the Kepeak 40W/18V Mini Solar Panel with USB Ports & DC Output at

  • Walmart deals and prices

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Roof, Wall Mount
Connection
USB+DC
Rec. use
Garden
Has written warranty
No
Manufacturer
KEPEAK
Shape
Square
Accessories
battery clip
Material
silicon
Number of solar panels
1
Coverage area
5 sq ft
Weight
0.79 lb
Maximum input voltage
18 V
Maximum operating temperature
85 ºF
Minimum operating temperature
0 ºF
Product line
solar
Activity
Outdoor Activity
Electrical current
DC
Color category
Black
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