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  • AP275U

    Xtorm Xtreme Solar Panel SolarBooster - 21W

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    This Xtorm Xtreme Solar Panel SolarBooster - 21W enables you to easily use solar energy to charge your devices, anywhere you go.

    High yield
    This SolarBooster uses high yield SunPower® cells to charges your devices extra fast. Thanks to these very efficient cells there is minimal loss of energy during the charging process, and they even function on a cloudy day! The LCD display shows the current Ampere output of the solar pane.

    Easy charging
    Mobile devices can be connected directly to the solar panel via USB. It’s even possible to use the SolarBooster 21 Watts to charge two devices, such as a smartphone and an Xtorm power bank, at the same time. Because the SolarBooster has an output of 2,1A it’s able to charge devices extra quickly.

    Practical design
    Thanks to the practical design and the carabiner that’s included, the SolarBooster 21 Watts panel can be easily fixed on a backpack, tent or bicycle. When the solar panel is not is use it’s easy to fold up and take with you. The material that’s used is strong, flexible and waterproof.

    Xtorm safety check

    • Overload protection:  Xtorm mobile chargers protect the battery of the attached mobile device from overcharging. 
    • Temperature control:  All Xtorm Solar Boosters are provided with a temperature control chip that prevents overheating.
    • Auto Power Management:  The Xtorm APM-chip automatically balances the power over the attached devices to prevent overcharging or overheating.
      • No internal battery 
      • Charges 2 devices at the same time
      • 21 Watts SunPower® Panel



      • First-rate Solar Panels: Xtorm incorporates the latest SunPower® technology, these are the best solar panels available on the consumer market.
      • Solar Efficiency: This Xtorm Solar Booster is provided with SunPower® solar panels boasting the industry’s highest solar efficiency ensuring the least possible loss of energy during the charging process.
      • Auto Power Management: The Xtorm 21 Watts Solar Charger is provided with the APM-chip. This means that this Solar Booster automatically balances the correct charging speed and efficiently divides the power between the attached devices.




      Length: 31 cm

      Width: 15.5 cm

      Height: 3.6 cm

      Packed Dimensions

      Length: 49 cm

      Width: 37 cm

      Height: 19cm

      Weight 1062 g
      Cell Capacity (mAh) 2600
      Input (W) 21W
      Output 1

      Amperage (A): 2.4

      Power (W): 12W

      Output 2

      Amperage (A): 2.4

      Power (W): 12W

      Solar Panel (W) 21W
      Type Input Solar Panel
      Capacity (mAh) 10,400
      Max Power (W) 17W
      Carabiner Yes
      Incl. Cable Yes
      LED Batter Indicator No
      Pouch No
      Wireless No
      Cell Weight  46.5 g
      Number of Outputs 2
      Outputs (V) 5V
      Output Types USB-A
      Total Battery Cell Weight 190 g
      Number of Battery Cells 4
      Flashlight No
      LCD Yes