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

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Description

☀️ Charge your freedom—power your lifestyle anywhere!

UNIVERSAL COMPATIBILITY - Includes 10-in-1 connectors to power phones, tablets, laptops, and even mini fridges without wall outlets.
SMART DUAL PORT CHARGING - USB QC3.0 and DC output intelligently optimize charging speed and device safety.
POWER UP ANYWHERE ANYTIME - 40W foldable solar panel delivers rapid charging on the go, perfect for your outdoor hustle.
LIGHTWEIGHT ULTRA PORTABLE - Weighing just 1.5kg with a compact foldable design, it fits effortlessly into your travel gear.
WEATHER RESISTANT DURABILITY - Built with waterproof materials and a rugged polyester pouch to brave any adventure.

The SinKeu 40W foldable solar panel combines a high 22% conversion efficiency with dual output ports (USB QC3.0 and DC up to 15V) to deliver fast, versatile charging for multiple devices. Lightweight at 1.5kg and designed with waterproof materials and a kickstand, it’s the ultimate portable power solution for outdoor professionals and adventurers alike.

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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.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

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

3 weeks ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Brand	SinKeu
Model Number	S40
Product Dimensions	35 x 24 x 5 cm; 1.5 kg
Color	ブラック
Name List for Name Plates	アウトドアキャンプ
Material	シリコーン
Power Source	太陽光発電
Wattage	40 W
Included Components	40W折りたたみ式ソーラーパネル x 1、10-in-1コネクター x 1、DC-DC ケーブル x 1、ユーザーマニュアル x 1、パッケージボックス x 1。
Are Batteries Included	No
Usage	USB
Item Weight	1.5 Kilograms

40W 折りたたみ式ソーラーパネル USB QC 3.0 12-15V DC出力ポータブルソーラー充電器高速充電技術モバイルバッテリー iPhone iPad サムスンアウトドアキャンプ用

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40W 折りたたみ式ソーラーパネル USB QC 3.0 12-15V DC出力 ポータブルソーラー充電器 高速充電技術 モバイルバッテリー iPhone iPad サムスン アウトドアキャンプ用

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions

40W 折りたたみ式ソーラーパネル USB QC 3.0 12-15V DC出力ポータブルソーラー充電器高速充電技術モバイルバッテリー iPhone iPad サムスンアウトドアキャンプ用