21W Solar Charger


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Your companion for charging on the go. This lightweight and durable charger is perfect for your next camping trip! Never be without power when you are off the grid. Charge your USB devices with this convenient solar charger.


  • Envelope closure
  • Internal pocket for cords, attachments, storage
  • Ideal For: Tablet, Phone, Watch
  • Does not charge RIVER
  • Solar Capacity: 21Watts
  • Power Output: Total 5V up to 2.4A (12W) regulated
  • Energy Conversion: 21-23%.
  • Weight: 1.04lb(0.47KG)
  • Unfolded Dimensions: 11.8*5.9*0.59 in (15*30*1.5 cm)
  • Folded Dimensions: 25.6*11.8*0.12 in (65*30*0.3 cm)
  • Material: POLY (IP64 Rated)

How it works

Solar charging

Two USB Ports

Solar device options

Charge two devices at the same time!


1. What can the 21W Solar Charger charge?

With the two USB outputs, you can simultaneously charge two USB devices such as cellphones, tablets, watches, or lights. The cumulative draw of all devices must be less than or equal to 21 Watts of power.

2. Does the 21W Solar Charger output a full 21 Watts of power?

Under optimal sunlight conditions the 21W Solar Charger can deliver up to 21 Watts of power. The angle of the panels and the weather can impact its performance.

3. Is the 21W Solar Charger waterproof?

The 21W Solar Charger is made of waterproof material (IP64 rated) making it durable and easy to use in the outdoors.

4. Can I chain multiple 21W Solar Chargers together?

No, the ability to chain is not currently a function of the 50W Solar Charger. EcoFlow Tech’s 50W Solar Charger is a great solution to increase your charge time.

5. Can you recharge RIVER with the 21W Solar Charger?

No, the 21W Solar Charger does not have the functionality to recharge RIVER. The 21W Solar Charger is designed to recharge your smaller devices when you want to get off the grid.

Additional Specs

Solar Panel

  • Rated Power


  • Efficiency


  • Cell Type

    SUNPOWER Monocrystalline


  • Weight


  • Unfolded Dimensions

    11.8*5.9*0.59 in (15*30*1.5 cm)

  • Folded Dimensions

    25.6*11.8*0.12 in (65*30*0.3 cm)

  • Warranty

    12 months

Output Ports

  • USB

    Total 5V up to 2.4A (12W) regulated

Tested and Certified

Testing and certifications

In the box

  • 21W Solar Charger