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Featured 3v-4v Flexible Portable Solar Panels

3v-4v Flexible Portable Solar Panels
3V 25mA Flexible Solar Panel

3V 25mA Flexible Solar Panel

3V 25mA Flexible Solar Panel Flexible Solar Panel that operates at 3V and 25mA. Flexible Solar Panels are highly efficient, portable, and versatile....

6.05 $5.50

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15.4v 0.77W 50mA Flexible Solar Panel

15.4v 0.77W 50mA Flexible Solar Panel

Flexible Solar Panels 15.4v 50mA Our Flexible Solar Panels are highly efficient, portable, and versatile solar panels.  Whether your application is s...

36.95 $25.00

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Frequently Asked Questions

Check out our great FAQs and Answers for our 3v-4v Flexible Portable Solar Panels below:

How to determine the size of solar panel or flexible solar panel I need to get for a desired voltage?

The voltage will vary with the size of the solar panel. Remember Watts (W) = Volts (V) * Amps (A)

Where are our flexible solar panels manufactured?

Our flexible solar panels are manufactured domestically.  This means that they are made in the U.S.   The thin-film solar panels are also manufactured domestically.

Do we sell a flexible solar panel that will power a laptop computer?

Yes we do.  The SolMaxx FlexFold 20W Flexible PV Panel or the SolMaxx FlexFold 62W Flexible PV Panel are two of our products that will power a laptop computer.  The SolMaxx FlexFold 62W Flexible PV Panel will charge a computer more efficiently than the SolMaxx FlexFold 20W Flexible PV Panel.  The SolMaxx FlexFold 20W Flexible PV Panel will charge your laptop computer, but it will work more as a trickle charger, meaning it will take many more hours to charge your laptop especially depending on the weather conditions.

What is the efficiency of PowerFilm modules?

There are many factors that go into the how much power you are able to draw from your solar panels, and many are related to the design and orientation of your solar array. With that in mind, a safe average to assume with PowerFilm technology is 5%. Flexible panel technology, however, is still young compared to rigid panels, and as such is advancing all the time. There are widely varying standards within the industry for solar panel efficiency ratings and we encourage you to test different panels to find their actual power output.

What is the ideal operation temperature for the PowerFilm series?

The PowerFilm series is designed to operate in all atmospheric conditions, though the optimal operation temperature is around 75°F. Every panel gets less efficient as its temperature rises far above 80°F

Do PowerFilm solar panels need maintenance?

Solar Panels are very low maintenance in general. As long as you perform routine checks of the wiring to insure that it maintains its integrity, and wipe off the panel with a damp cloth to remove any dirt and grime that has built up on it, your panels should last a very long time.

1) Can I connect these 3-4 V flexible cells together?

Yes, you can connect our flexible panels together to increase both the voltage and the current. Please see the “How-To” and “Learning Center” tabs for more information connecting thin film solar panels.

2) Do the thin film flexible cells include connection tabbing?

Some of the flexible cells are sold with connection tabbing already in place, while some products are not. Typically, Silicon Solar’s thin film solar cells that include encapsulated weatherproof lamination come with tabs, while the “non-weatherized” options do not include tabbing. The recommended connector wire size is a minimum size of 24 gauge. Please see the individual product specifications or feel free to call our customer service representatives at (800) 786-0329 if you have any questions.

3) If I need to charge a battery, what size thin film solar cells should I use?

First, you must take note of the voltage of the battery you wish to charge. As a general rule of thumb, for 1.2 volt batteries (such as AA batteries) a solar module with an Operating Voltage of 3-4 volts.  A 3-3.6 volt module will typically charge 2 AA rechargeable batteries. For 6 volt batteries, we recommend a solar module with an Operating Voltage of at least 7.2 volts.  Modules of this voltage will charge 5 AA rechargeable 1.2 volt batteries or a 6 volt gel or lead acid battery. A solar module with an Operating Voltage of 15.4 volts will charge a 12 volt gel or lead acid battery.  The amperage rating of each solar module will determine how quickly the module will charge each battery unit.  If you have additional questions, please call our customer service specialists at (800) 786-0329.

Category How-To Guides

Check out our great DIY and How-To Guides for our 3v-4v Flexible Portable Solar Panels below:

How To Connect Flexible Panels in Series or Parallel

Connecting solar modules in series will achieve higher voltage, while connecting them in parallel will increase the current. However, only connect like modules together.  For example, you may connect two 3.6 V 100mA modules, or two 4.8 V 50 mA modules, but do not mix them.  Parallel connecting two similar modules will double the output current, and series connecting three identical modules will triple the output voltage.

Note the polarity of the solar module in the “Learning. The positive copper contact is on one end and the negative is on the other end.   The solar modules should be soldered to from the front.  Use the hot tip of the soldering iron to melt through the clear coating over the copper tape. Do not burn through more than just the thin clean coating on the panel as burning too deeply will damage the solar cell. You can also remove a small piece of the clear coating with a sharp knife prior to soldering to the copper tape. To establish good contact between tabs and cells, melt a dot of solder on to the exposed copper tape using a low temperature soldering iron adjusted to about 600 to 650 degrees (F). You may also also solder the tabs directly to the copper tape, without using a solder dot.

These panels do not come with Blocking Diodes. If you are using this panel to charge batteries you will need to attach a blocking (reverse) diode or disconnect the panel when sunlight is not hitting the panel. This will prevent the solar module from draining the battery when the solar module is in the dark. A diode is not required for a battery-free electrical device.

thin film polarityConnected thin film

Category Learning Guide

Check out our great Information & Learning Guides for our 3v-4v Flexible Portable Solar Panels below:

Silicon Solar’s Flexible Solar Panels are lightweight, paper thin, and highly flexible meaning they are especially durable.  Constructed with amorphous silicon, these cells maintain a high efficiency in indirect sunlight, and even indoors, making them ideal for wireless electronic applications (such as your solar calculator). Their ultra-thin profile enables them to be easily integrated into such electronic devices for solar recharging or direct powering. Many modules have been specifically sized to recharge AA, AAA, and 6V and 12V batteries at various rates. Our baseline flexible solar panels, while very durable, do not include a UV stabilized surface. However, Silicon Solar does carry many sizes of weather encapsulated flexible panels that can withstand exposure to everyday outdoor use. To connect these cells, first please note the polarity of the cells in the image below, and then see the “How-To” section regarding connecting flexible panels in either series or parallel.

thin film polarity

Additional & Related Resources

Check out our great Documents & Additional Resources for our 3v-4v Flexible Portable Solar Panels below:

  1. 3V 22mA Flexible Solar Panel
  2. 3V 50mA Flexible Solar Panel
  3. 4.2V 22mA Flexible Solar Panel
  4. 3V 25mA Flexible Solar Panel
  5. 3.6V 50mA Flexible Solar Panel
  6. 4.8V 50 mA Flexible Solar Panel
  7. 3.6V 100mA Flexible Solar Panel
  8. 4.8V 100mA Flexible Solar Panel
3v-4v Flexible Portable Solar Panels

Our 3 – 4v flexible solar panels are ideal for integrating into your solar battery chargers and small, portable solar power systems. Each of our 3 – 4v flexible solar panels come with solder pads, allowing them to be interconnected to create larger flexible solar panels without any hassles.

These 3 – 4v flexible solar panels are great for a variety of small solar projects, such as:

Portable solar battery chargers
Small portable solar lights
Solar training, education & experimentation
These flexible solar panels are ideal for backpacking and using small emergency devices such as cell phones, lighting equipment, and or emergency receivers with battery backup. The 3V-4V solar panels also make great charging devices for AA, AAA, C and D batteries.

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Silicon Solar
2917 State Hwy 7
Bainbridge, NY 13733
P: 1.800.786.0329


Why Shop With Us

Why Shop With Silicon Solar

Silicon Solar is, and always will be, a family owned and operated solar company dedicated to providing the highest quality solar powered products which have completed our rigorous quality inspection. We also manufacture a full line of solar powered products right here in our production facility; enabling us offer faster delivery and priority technical support.

Search our online catalog for hundreds of solar lights, solar fountains and many other products, including solar cells and solar panels. We also manufacture custom solar kits upon request for professors and educational programs.

Call us today for your solar request, 1.800.786.0329

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Help us fight SPAM:
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Contact Silicon Solar

Silicon Solar
2917 St Hwy 7
Bainbridge, NY 13733

P: 1.800.786.0329

Contact Silicon Solar