Why the 40 watt solar panel can not produce desired power when charging my batteries?

This is normal, the solar panel works fine if it could produce an output power. Actually 40W is the max power of the solar chips, and 40W is a tested result in a laboratory with very strong light. The small solar panels are affected by many factors

Is the solar charger panel compatible with all power stations?

The solar panel comes with 10 DC adapters and is compatible with most portable power stations/solar generators on the market. However, I would recommend checking the input voltage range of your device to ensure it matches the 18V output solar panel.

It is recommended to charge how many watts of portable power staion?

Because the DC output is 18V/2.27A, the higher the wattage of your solar generator, the longer the charging time will be. For example: 300W=300/(18*2.27)=7 hours approx.

Can it charge multiple devices at once?

Yes, the 40W solar panel can charge multiple devices simultaneously. It has 3 output ports - 1 DC output, 1 USB-C output, and 1 USB QC3.0 output - that allow charging of different devices like phones, laptops, power banks etc. at the same time.

What's in the package?

40W Foldable Solar Panel x 1, 10-in-1 Connector x 1, DC-to-DC Cable x 1, User Manual x 1

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

40W solar charger panel for phone, laptop

Product ID: 390542932

Details

Brand
SinKeu
Efficiency
High
Item weight
1.5 kg
Material
Silicon
Product dimensions
33.8L x 27.9W

⚡40W max power output

🔋22% high solar conversion efficiency

🔌Dual output ports (DC & USB QC3.0)

HK$1029

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

Description

☀️ Harness the sun’s power—stay charged, stay unstoppable!

FAST SMART CHARGING - Dual output ports with QC3.0 and TIR-C tech optimize charging speed while protecting your devices.
COMPACT TRAVEL READY - Lightweight 4.2lb foldable design with kickstand fits effortlessly into your outdoor gear.
WEATHERPROOF DURABLE - Water-resistant panel and rugged polyester pouch keep you powered rain or shine.
UNIVERSAL COMPATIBILITY - Includes 10-in-1 connectors to charge phones, laptops, tablets, and even mini fridges seamlessly.
POWER UP ANYWHERE ANYTIME - 40W foldable solar panel delivers reliable energy on the go, perfect for your mobile lifestyle.

The SinKeu 40W foldable solar charger features a high-efficiency 22% monocrystalline panel with dual output ports (15V DC and USB QC3.0) for versatile device compatibility. Weighing just 4.2 lbs and designed with a kickstand, it’s ideal for outdoor professionals and travelers seeking reliable, weather-resistant solar power on the move. Comes with a 10-in-1 connector kit and backed by 24/7 support and a 12-month warranty.

Specifications

ASIN	B08S7B46CB
Amperage Capacity	2.6 Amps
Best Sellers Rank	#13,556 in Mobile Phones & Communication Products ( See Top 100 in Mobile Phones & Communication Products ) #27 in Mobile Phone Solar Chargers
Brand	SinKeu
Brand Name	SinKeu
Connector Type	DC-to-DC Cable, USB
Customer Reviews	4.5 out of 5 stars 1,002 Reviews
Efficiency	High Efficiency
Folded Size	33,8 x 27,9 x 5,1 cm
Included Components	40W Foldable Solar Panel x 1, 10-in-1 Connector x 1, DC-to-DC Cable x 1, User Manual x 1, Package Box x 1
Included components	40W Foldable Solar Panel x 1, 10-in-1 Connector x 1, DC-to-DC Cable x 1, User Manual x 1, Package Box x 1 Included components 40W Foldable Solar Panel x 1, 10-in-1 Connector x 1, DC-to-DC Cable x 1, User Manual x 1, Package Box x 1 See more
Item Dimensions L x W x H	33.8L x 27.9W x 5.1H centimeters
Item Type Name	Solar Panel
Item Weight	3.3 Pounds
Item weight	3.3 Pounds
Manufacturer	SinKeu
Manufacturer Part Number	40W
Material	Monocrystalline Silicon
Material Type	Monocrystalline Silicon
Maximum Power	40 Watts
Maximum Voltage	15 Volts
Model Number	S40
Output Voltage	5 Volts
Product dimensions	33.8L x 27.9W x 5.1H centimeters
Special Features	Water Resistant, Waterproof
UPC	616985224616
Unit Count	1.0 Count

Reviews

S**.

Exceptional Performance and Convenience for All Your Outdoor Power Needs!

8.08.2024

N**E

Works great!

15.06.2024

Y**L

Clean and portable energy anywhere

20.03.2026

P**R

Heavy compared to others, but that’s a good thing, but needs extra buckboost or jackery

2.07.2022

S**.

Provides peace of electrical means on trips

13.08.2025

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

HK$1029

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

View all Trustpilot reviews