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Solar Charger 21w Portable Solar Panel Dual USB Ports

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RRP: £69.99 Special Price £39.99
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Overview

Portable 21W solar panel charger with dual USB ports and Smart IC charging, foldable and weatherproof for charging smartphones and tablets.

  • 21W max power output
  • Dual USB output ports
  • Output: 5V/3.8A max each port
  • Monocrystalline silicon solar technology
  • Smart IC charging technology
  • Rugged, weatherproof build
  • Foldable for storage and handling
  • Unfolded: 29.52 × 11.22 × 0.1 in
  • Folded: 11.22 × 7.48 × 1.18 in
  • 24-month warranty

Product Overview

Set the foldable panel out for direct solar exposure and use the two USB outputs to power compatible devices while you’re on the move.

The Power Panel Portable Solar Phone Charger allows you to Charge your SmartPhone, Tablet on the move, in super fast time.

✓ 21W High-Efficiency Solar ✓ Dual-Port Charging ✓ Weatherproof & Rugged ✓ Ultra-Portable Foldable ✓ 2-Year Guarantee

Never Run Out Of Charge with 21 watts of Solar Power!

The 21 watt Solar Charger Panel is Rainproof has dual USB ports, and comes with a 2 Year Guarantee. Is very easy to use can be folded away and has buckles for rucksacks, bags etc

Device Compatibility

Universal Solar Charging: Our 21W panel works with virtually all USB devices (5V/3.8A max total output). Smart IC technology ensures optimal charging.

Popular Supported Devices

  • Apple: iPhone 8-15, iPad Air/Mini/Pro
  • Samsung: Galaxy S10-S24, Note/Tab Series
  • Google: Pixel 3-8, Pixel Tablet
  • Other: Switch Lite, Kindle, Bluetooth Headphones

Supported Charging Standards

  • USB Power Delivery (PD)
  • Quick Charge 3.0
  • Standard 5V/2.1A charging
  • Apple Lightning

Will My Device Work?

Your device is compatible if it:

  • Charges via USB/Type-C cable
  • Doesn't exceed 3.8A total draw
  • Uses standard protocols

Compatible With Devices From:

Apple Samsung Google OnePlus Xiaomi Oppo Vivo Realme Huawei* Sony Nokia Motorola + 100+ others

*Fast charging requires compatible devices and direct sunlight. Cloud cover may reduce output.

Advanced Solar Technology

Thanks to SUNPOWER solar arrays, benefit from a total solar conversion ratio up to 23.5%. Our highly efficient solar cells convert up to 21.5-23.5% of solar power into free energy, leading the industry in conversion efficiency.

Smart Charging Technology

The advanced Smart IC technology detects all connected devices' input and distributes current output accordingly for up to 3.8A overall output.

Dual-Device Charging

Two USB output sockets with Smart Solar technology allow you to charge multiple devices simultaneously. The 3.8A of power can be shared between both ports.

Versatile Power Solution

Used to quickly charge your mobile device including all Iphones, handhelds, smart phones, tablets, Samsung, HTC, Nokia in fact anything that can be charged via a USB port!

Portable Design

A lightweight (0.65kg) portable device that will be no nuisance during your most adventurous treks. Hook it up to your backpack, tent, or up the nearest tree for optimal solar exposure.

Weather-Resistant

High-wear PVC waterproof fabric to outlast whatever the weather throws at it. The rugged construction ensures reliable performance in various weather conditions.

Mounting Options

Features practical buckles for rucksacks and bags, with multiple attachment points for versatile positioning.

Solar charger 21W portable solar panel dual usb ports

Complete Package Contents

Main Components

  • 1 x 21W Foldable Solar Panel Charger

Additional Features

  • 2 x Mounting Buckles
  • Comprehensive User Manual

Experience the Difference With PowerBee Ltd

Award-Winning Quality

  • Best Buy Award Winner 2021–2025
  • Over 16 Years of Renewable Energy Expertise
  • Certified: CE, RoHS, REACH, and UKCA

Expert Support

  • Professional Assistance Within 24 Hours
  • Clear, Easy-to-Follow Product Guidance
  • Helpful Video Tutorials Available

Customer Benefits

  • 30-Day Money-Back Guarantee
  • Up to 2-Year Warranty* Across Product Range
  • Free 24 Hour UK Mainland Delivery
  • Eco-Friendly, Energy‑Saving Solutions
  • Support Hotline: 07786 948 899
✓ 30-Day Money-Back Guarantee ✓ Free 24 Hour UK Delivery On All Orders ✓ PowerBee: Best Buy Award Winner 2021–25
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Technical Specifications

SpecificationDetails
Model NumberRGM-21W
Max Power Output21W
Output Ports2× USB (5V/3.8A Max each)
Solar TechnologyMonocrystalline Silicon
EfficiencyHigh efficiency (exact % not specified)
Folded Dimensions11.22 × 7.48 × 1.18 in (285 × 190 × 30mm)
Unfolded Dimensions29.52 × 11.22 × 0.1 in (750 × 285 × 2.5mm)
Weight1.43 lbs (0.65 kg)
CertificationsNot specified (CE/RoHS likely)
Warranty24 Months
Package Includes
  • 21W Foldable Solar Panel Charger
Key Features
  • Smart IC charging technology
  • High-wear PVC fabric case
  • 2 mounting buckles included
  • Works from -10°C to 60°C
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21W Panel Setup Guide

Maximize your charging efficiency with these expert techniques. Proper installation ensures optimal performance in all conditions.

✓ 5-Minute Setup ✓ All-Weather Ready ✓ Dual-Device Charging

Step 1: Solar Panel Positioning

Optimal Angles

  • UK/EU: 35°-45° tilt year-round
  • Direct Sun: Adjust every 1-2 hours
  • Backpack Mount: Use included buckles for 15°-30° tilt

Environmental Tips

  • Keep 50cm clearance from surfaces
  • Avoid partial shading (reduces output by 50-70%)
  • Clean panel surface weekly with microfiber cloth

Step 2: Device Connection

USB Devices

  • Phones/Tablets: Use both USB ports (3.8A max combined)
  • Max simultaneous devices: 2 (shared 3.8A total)

Power Banks

  • Connect via USB port
  • Charge time: ~6hrs for 10,000mAh (full sun)

Charging Tips

  • Prioritize direct sunlight for fastest charging
  • Close battery-intensive apps during charging
  • For best results, charge one device at a time

Step 3: Mounting Solutions

Backpack Mount

  • Attach using included buckles (no loops required)
  • Position panel top-facing for optimal sun exposure
  • Adjust buckle tension to prevent movement

Ground Setup

  • Lay flat or prop against backpack at 25°-40° angle
  • Use rocks/sandbags in windy conditions
  • Face true south (magnetic compass +15°)

Temporary Mounts

  • Tent/Tarp attachment: Use carabiners with buckles
  • Tree mount: Hang via top buckle points
  • Bike mount: Secure with bungee cords

Step 4: Troubleshooting

⚠️ No Power? Check both USB connections ⚠️ Slow Charging? Reposition panel angle ⚠️ Port Not Working? Try different cable

For persistent issues, contact our support team - 2-year warranty included.

How Your 21W Charger Panel Works

Understand the smart technology behind your portable solar charger and maximize its performance in any environment.

✓ SUNPOWER® Technology ✓ Smart IC Charging ✓ Weather-Resistant Design

1. Solar Energy Conversion

High-Efficiency Cells

  • 54 monocrystalline silicon cells convert 19.1-23.5% of sunlight
  • ETFE coating reduces reflection for cloudy day performance
  • Generates up to 21W (5V/3.8A total) in optimal conditions

Real-World Performance

  • Full sun: 18-21W output
  • Partial clouds: 12-15W output
  • Heavy overcast: 4-8W output

2. Intelligent Power Distribution

Device Detection

  • Smart IC chip identifies connected device types
  • Auto-selects optimal voltage (5V standard)
  • Prevents overcharging (max 3.8A shared across ports)

Port Specifications

  • USB-A (x2): 5V/3.8A shared
  • No DC output (21W model only)

Simultaneous Use

  • Example 1: Phone (1A) + Tablet (2A) = 3A total
  • Example 2: Power bank (2.4A) only = 2.4A dedicated
  • Both ports share 3.8A maximum

3. All-Weather Operation

Durability Features

  • IP64 waterproof rating (rain/snow resistant)
  • -10°C to 60°C operating temperature
  • Rugged PVC fabric construction

Performance Tips

  • Cold weather: Output increases slightly (better conductivity)
  • Hot weather: Keep ventilated (output decreases above 45°C)
  • After rain: Shake off water droplets to restore full efficiency

4. Real-World Charging Examples

Device Battery Capacity Full Sun Charge Time Cloudy Charge Time
iPhone 15 3,349mAh 2-2.5 hours 4-5 hours
iPad Air 7,606mAh 5-6 hours 10-12 hours
10,000mAh Power Bank 10,000mAh 7-9 hours 14-18 hours

Note: Times assume optimal panel positioning and may vary based on environmental factors.

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