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BigBlue Bi-Flex Series


BigBlue Bi-Flex Series

Marine-Grade | Maximum Energy 200W 12V | High-Efficiency Grade-A PERC >22.8% | Bi-Facial with Extra 30%


With the ability to capture sunlight from both sides, BigBlue lifts solar power to the next level by applying Grade-A PERC solar cells. Compared to traditional roof-mounted panels, POWAFREE Bi-Flex Series can provide up to 30% more energy (under STC conditions and average ground reflectivity) – absorbing the sunlight reflected off the balcony ground or wall; thus bringing higher returns to the users.


Bi-Flex 200Bi-Flex 100Bi-Flex 135


BigBlue Bi-Flex Series


Double-sided power generation efficiency and gain, offering energy conversion up to 22.8%.


Lightweight and highly flexible, making them perfect for easy installation on curved rooftops and surfaces with a maximum bending diameter of 34cm without damaging the solar cells.


This customized encapsulant, with four double-ply layers, provides durable protection for solar cells in various conditions (high temperatures, water, and UV exposure); while offering heightened light transmittance.


10 multi-busbars designed with multiple dense grid lines to improve the cell current ability for the reduction of loss, while raising the cell output power to at least 5W higher than that of conventional cells.



Choose your power, your way! Select from various sizes and wattages (200W, 135W, & 100W) to perfectly match your unique application scenarios.

Bi-Flex Series

  • FAQs

1. Why the connected power station is charged slowly, or cannot be charged?

Check if your power station is well connected to the solar panel (a loose connection may cause sparks), or if the connecting cable works normally. Re-plug the cable or try with another cable.

BigBlue strictly follows the standard defined under IEC 60904 (Class A+) for the solar simulator performance requirements in testing our product. Use a multimeter to check if the current and voltage of the power station are within the accepted range. To protect your safety, connect the multimeter without any light conditions.

The amount of sunlight, weather, or shade may cause fluctuations in the power output of the solar panel that prevent your power station from charging. In this event, try placing the solar panel in more direct sunlight or wait for the weather to clear. In order to get the maximum solar energy, please adjust the solar panel toward the sun.

2. What is the difference between the nominal / rated output from the actual output of the solar panel?

The nominal output refers to the power of the solar panel which is not equal to the actual output of the solar panel. In fact, the actual output is less than the nominal output, since there will be some power loss in the form of heat during the solar energy conversion, and a few other environmental factors such as the weather conditions, seasonal changes, and location.

The 200-watt of Bi-Flex 200 is the maximum nominal power is rated based on the Standard Test Conditions (STC) – the industry-wide standard for the conditions under which a solar panel is tested. The test conditions are defined as irradiation 1000 W/m², temperature 25°C, and air mass 1.5.

3. What is the different between connecting the solar panels in series and parallel?

Solar panels can be connected in series or parallel to suit your electrical circuit size and power requirements. Series connections increase the operating voltage output while maintaining the system current output the same as one panel. In parallel connections, individual panel current output sums up to create the system output current, and the system output voltage remains equivalent to one solar panel's output voltage.

4. Can I connect this solar panel with another size of solar panels in series?

While it is possible to connect solar panels of different power ratings in series, this will limit the current to that of the lower-rated panel. This means that Bi-Flex 200 will not be able to reach its full potential. When connecting panels in series, all of the panels should have the same current rating.

Ensure that your solar panel output current matches your nominal battery charging current. Please check with your battery manufacturer to ensure the specifications match.

5. What should I be aware of before installing flexible solar panels on a caravan or rooftop?

Strictly follow the installation instructions. Use structural silicone-based adhesive, ensuring a minimum thickness of 4 mm and width of 10 mm. Consider applying VHB double-sided tape along the longer edges for added security. Adding mechanical fasteners and screws significantly enhances the connection strength between your caravan (or rooftop) and the solar panels.

6. What is required for my off-grid solar power system?

You'll need to connect a solar panel to a charge controller for current regulation, along with a battery for power storage. To set this up, you'll require adapter kit cables for wiring the solar panel(s) and charge controller, as well as tray cables to connect the charge controller to a deep-cycle battery.

7. Is it safe to walk on flexible solar panels? 

It's not recommended as it can exert excessive pressure on a small area, potentially causing cracks and damage.

8. How do I clean solar panels?

Use a non-abrasive sponge and water for cleaning. Regular maintenance to remove dust, sand, and dirt is recommended, as accumulated dirt and stains can reduce panel power output.

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