The 125 watt solar panel to be used for 12 volt battery charging and many more power applications

125 Watt solar panel125 Watt solar panel.

The 125 watt solar panel is from Value Line Solar. These are high quality industrial and rugged solar modules.

Use it to power or recharge about anything from your home, cell phone or any other appliance. 

It comes with 36 solar cells connected in series. This ensures max battery charging performance.

They call it the VLS-125W, 125 Watt 12V Solar Panel with junction box. This is a conduit ready junction box.

Manufacturing takes place under ISO 9001 certified conditions. In other words the manufacturer pays extra attention to the customer.

This polycrystalline solar panel comes with a heavy duty anodized aluminum frame. The modules can withstand harsh weather conditions. High winds, heavy snow loads and extreme temperatures.

They encapsulate the cells in EVA.

EVA (ethyl vinyl acetate) is available in thin sheets. The manufacturers insert these thin sheets between the solar cells. Also between the module and the top surface. They also use it between the module and the back surface.

125 Watt Solar Panel Specs


Maximum Power:

Open-Circuit Voltage (Voc):

Short-Circuit Current (Isc):








  • Two years material and workmanship.
  • It guarantees 10 years of a 90% efficiency rate.


Use these 125 watt solar panels for domestic and commercial stand-alone applications;

You can use it for remote industrial off grid solar systems.

Microwave/radio repeater stations.

Traffic message board OEM.

It provides electricity for villages in remote areas.

Use it for RV’s and for camping in remote areas. 

Use it for medical facilities in rural areas.

Wi-Fi & WiMax.

As a power source for summer vacation homes.

LED outdoor lighting.

Water quality and environmental data monitoring systems.

Emergency communication systems and many more.


59.2 x 26.5 x 1.97 inches.

Operating the 125 watt solar panel

To make the 125 watt solar module fully operational we need  a charge controller, battery and an inverter.

Size the charge controller by dividing max watts per hour by total volts.

This is 125/12 = 10.4 Ampere

Add 25% for safety and you get a 13 Ampere charge controller.

A 20 Amp charge controller will be a good choice.

Size the battery by dividing the total watt by volts.

This is 125 watt x 6 hours sunlight X .85 for losses/ 12 volt x 2 for DOD.

This is 125 x 6 x .85 / 12 x 2 =  106 Amp Hours .

A 110 Ah battery will be a good choice.

Size the inverter by deciding the max watts to be utilized at once.

The max output of the panel is 125 watt. 

Rule of thumb is to use an inverter 1.25 to 1.5 times more than max watts.

In this case we can work with a 250 watt inverter which makes the system much more flexible.


  • The 125 watt solar module is easy to customize.

  • The pre-drilled holes in the frame make it easy to mount on a variety of ground support or solar pole structures.
  • The polycrystalline module is efficient. It produces reasonable output in lower light conditions.
  • The modules are reliable with a long lifespan.

  • It comes with an anodized aluminum alloy frame. The frame is sturdy. It has high corrosion resistance with high strength and durability.

  • They seal the module with low iron high transmission tempered glass 3, 2 mm thick. It is impact resistant and the light transmission is of very high quality.
  • The 125 watt solar panel comes with a weather proof junction box. It allows for connection with a waterproof strain relief connector. 
  • This ensures easy connection to a charge controller.
  • Performance and reliability are far above the average in this field..

Maintaining the solar module

The only maintenance that you as a user have to do is making sure the cables are not damaged.

This is to ensure a good working condition. 

Cleaning the surface of the a solar panel is also very important. 

Use a damp cloth to perform this duty. 

If necessary you can buy a proper solar cleaning liquid.

You can also buy a  a convenient solar brush for cleaning the surface of the panel.

A dirty panel leads to a big drop in efficiency. 

A professional person must perform all other maintenance functions. 

To Mention

The solar module comes with clear information. You do not have to go and look for the data, it is right there and available. 

To conclude

The 125 watt solar panel is a handy and very usable piece of solar equipment.

Value Line Solar is a good manufacturer and the solar modules are of high quality. The modules last for many years to come.

 If you purchase a product through a link on this page, I do get a small   percentage  of commission at no extra cost to you.

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