Sungold logo

Small Solar Panels BXF-N-21W

Previous slide
Next slide

Small Solar Panels BXF-N-21W

  • Model: BXF-N-21W
  • Brand: Sungold
  • Weight: 0.72kg
  • Cell Efficiency: 20.03%
  • Folding Size:  292*195*3mm
  • Unfolding Size: 596*292*3mm
  • Solar Cell: Mono
  • Warranty: 1 year


Sungold specializes in providing green power solutions for outdoor enthusiasts and adventurers. Sungold BXF-N-21W small solar panels features a self-developed fast charging interface with high charging efficiency. The BXF series (BXF-N) small solar panels is lightweight, portable, and designed for charging small electronic devices such as cell phones and tablets.


ETFE Surface Material


Waterproof and durable

Multi-purpose use

BXF-N-21W portable solar panel

ETFE material

ETFE Surface Material

Sungold BXF series all-in-one portable solar panels are made of ETFE material. The ETFE laminated outer film is highly resistant to UV rays and has sound light transmission. It also has excellent weather resistance, which extends the life of the solar panel.

Multi-purpose use

The Sungold BXF-N-21W portable solar panel features a black backing material. It is equipped with 2* USB output ports for charging multiple small devices simultaneously, including smartphones, tablets, digital cameras, and more. It provides you with the most reliable help when you need to charge in an emergency.

Safe and reliable
Strong applicability


The Sungold BXF-N-21W foldable solar panel weighs 1.6 lbs (0.72kg), 23.4*11.5*0.12 inches (unfolded), 11.5*7.7*1.46 inches (folded), and is easy to carry, install, and transport. This solar panel has 4 metal reinforced hanging hole clasps, you can hang it anywhere.

Waterproof and durable

Sungold BXF-N-21W portable solar panel has IP65 waterproof rating. Not only waterproof but also resistant to corrosion and high temperature, perfect for camping, hiking, picnics, and other outdoor activities. Please note that the junction box is not waterproof, please keep it dry.

one-piece process


The BXF series (BXF-N) solar panel phone charger is designed for charging cell phones and tablets. It is lightweight and portable, as well as waterproof and durable, making it an efficient power source for outdoor activities and preventing accidental power outages.

Maximum power(Pmax)BXF-N-21W
Open-circuit voltage(Voc)7.7V
Voltage at Pmax(Vmp)6.6V
Short-circuit current(Isc)3.43A
Current at Pmax(Imp)3.18A
Cells efficiency(%)20.03%
The maximum system voltage25V DC(IEC)
Power temperature coefficient-0.38%/℃
Voltage temperature coefficient-0.36%/℃
Current temperature coefficient0.05%/℃
Output power tolerance±5%
Operating temperature-10~60℃
Warranty1 year


Sungold BXF-N-21W foldable solar panel weighs 1.6 lbs (0.72kg), 23.4*11.5*0.12 inches (unfolded), 11.5*7.7*1.46 inches (folded), and is easy to carry, install, and transport.

With 2 USB output ports, it can charge 2 devices at the same time. If thick clouds are passing by, it will pause charging and restart when the sun comes up again.

A portable solar panel is not a device that stores electrical energy, nor is it a battery. It is only used to convert sunlight directly into electricity and immediately output it to your electronic devices!

We recommend that you connect your USB device to this solar charger in direct sunlight and no shade. Using the portable solar panel in rainy and humid conditions is not recommended, as the solar panel can only power your device quickly in full sunlight. Solar charging times vary and depend on many factors, such as altitude, temperature, time of year, angle, and sun position.

This BXF-N-21W portable solar panel has an IP65 waterproof rating. The surface of the solar panel is waterproof, while the output port is not waterproof. Please do not submerge the folding panel solar in the water!

small solar panels

Download guide

The BXF series comes in an array of sizes and form factors, with peak power 21 watts , Download our guide to 21 watt Small Solar Panels


If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Scroll to Top