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Renogy E.FLEX 21

21-watt portable solar panel

Item # 441R21EFG1

Got sun? Then you've got power.

Got sun? Then you've got power.

New

Item # 441R21EFG1

In stock
$79.99

About the Renogy E.FLEX 21

Efficient solar power 

Got sun? Then you've got power. Renogy's E.FLEX 21 portable solar panel delivers the power to rejuvenate the batteries in your essential electronics. Its highly efficient panels convert the rays from the sun into usable power, while its built-in technology also keeps your connected device protected from overheating. Two 5-volt USB outputs can charge your phone, tablet, or even an action camera.

Efficient solar power 

Got sun? Then you've got power. Renogy's E.FLEX 21 portable solar panel delivers the power to rejuvenate the batteries in your essential electronics. Its highly efficient panels convert the rays from the sun into usable power, while its built-in technology also keeps your connected device protected from overheating. Two 5-volt USB outputs can charge your phone, tablet, or even an action camera.

Perfect for the journey

This panel's 3-fold low-profile design lets it fit nicely into a backpack or suitcase, or you can use the included carabiners to latch onto your tent. Its water-resistant nylon outer shell will take the abuse to protect the panels. When you're set up at your campsite or music festival, unfold the panel, adjust the built-in kickstand, then plug in to charge your gear.

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Product highlights:

  • portable 21-watt solar panel
  • package includes two USB-A to micro USB cables and two carabiners
  • 3-section folding solar panel for portability when not in use
  • two 5-volt/4.2-amp USB-A outputs for charging devices
  • iSolar technology for fastest charging speed and overheating protection of connected devices
  • energy conversion efficiency up to 22%-25%
  • auto-optimization function immediately reconnects charging after interrupted sunlight
  • rugged, water-resistant nylon outer shell
  • integrated kickstand
Specs:
  • approximate charging times:
    • full smartphone charge in 2-4 hours
    • full tablet charge in 4-6 hours
    • full action camera charge in 2-4 hours
  • weight: 1.2 lbs
  • unfolded dimensions: 18.4"L x 11.4"W
  • folded dimensions: 11.4"L x 6.22"W
  • warranty: 5 years on solar panels; 1 year for other materials
  • Our 60-day money-back guarantee
  • MFR # R21EF-G1

What's in the box:

  • Flexible solar panel
  • Two 25" USB cables (Type A USB on one end and Micro-B USB on other end)
  • 2 Carabiner clips
  • User Guide
  • Product Catalog

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More details on the Renogy E.FLEX 21

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Features

Overview: The Renogy E.Flex 21 Portable Solar Panel (R21EF-G1) is an easy and efficient way to charge your phone, tablet, or action camera when you're away from an electrical outlet. The panel features a foldable design that makes it easy to carry in a backpack, tote bag, or suitcase. You can simultaneously charge two devices from its dual USB (Type A) ports. The E.Flex 21 includes two USB cables, and two carabiners for mounting the panel. Dimensions: Width 18.8125" Height 11.375 Depth 0.722" Weight: 17.65 ounces.

Trifold Design: The E.Flex 21 has three 10-1/2" x 5-5/8" solar panels in a rugged, water-resistant nylon case that folds into a compact, easy-to-carry package with a snap closure. When folded, the solar panel reduces to 6-1/2" x 11-3/8" x 1-3/16".

Integrated Kickstand: The Portable Solar Panel has a 10-1/4" x 3-1/4" rigid nylon kickstand that can help you angle the panels toward the sun for optimum charging. When not in use, the kickstand is held in place by a hook-and-loop strip.

iSolar Technology: The E.Flex 21 uses advanced iSolar technology for the fastest charging speed possible, and to protect the device from overheating. Auto-optimization circuitry makes sure the charger immediately reconnects when sunlight returns after a charging interruption. The panel is highly efficient in converting sunlight to usable electric current for charging your electronic devices. Typical solar cells have a 13% to 15% energy conversion efficiency. The E.Flex 21 features an efficiency of 22% to 25%. The solar panel's specifications are as follows:

  • Rated Power: 21 watts
  • Open Circuit Voltage: 7.2 volts
  • Short Circuit Current: 3.7 amps
  • Optimum Operating Voltage: 6 volts
  • Optimum Operating Current: 3.5 amps

USB Outputs: The Portable Solar Panel has a 2" x 1-1/2" box on the back that contains the voltage controller and the output connections. The charger has two identical USB Type A ports with an output of 5V / 2.4A (12 watts). In direct sunlight, the E.Flex 21 can charge a typical smart phone in 2-4 hours, a tablet in 4-6 hours, and an action camera in 2-4 hours.

Power Output Warranty: The E.Flex 21's solar panels have a pro-rated power output warranty. The power efficiency rate is warranted at 95% for 5 years, 90% for 10 years, and 80% for 25 years. The material and workmanship is covered by a 5-year warranty.

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Renogy E.FLEX 30
30-watt portable solar panel
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$109.99
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Add a connection and more power

The Renogy E.FLEX 30 offers these features:
  • 4-section folding 30-watt solar panel
  • three 5-volt/6-amp USB-A outputs for charging devices
  • dual kickstands
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