FAQ's

Yes. Solar panels work in cloudy and rainy weather, but they generate less power—usually 10–30% of what they produce on sunny days. Adding a battery or power station helps keep your power supply steady.

Yes, as long as the power station has MC4 connectors and supports the panel's output specifications (e.g., voltage, current, wattage). JJN solar panels are compatible with most systems meeting these criteria, but check for optimal performance.

1.Review the PV input requirements of the solar generator (voltage, current, wattage limits).
2.Check the panel's output specs (e.g., open-circuit voltage Voc, max power current Imp, max power Pmax).
3.Calculate total voltage, current, and wattage for your setup.
4.Ensure compatible connectors (JJN uses MC4).

No, use panels of the same type, rating, and brand for best results due to voltage/current differences that could cause inefficiencies or safety issues.

Avoid connecting with other brands, as differences in voltage and current may lead to performance issues or safety concerns.

1.Check the power station's solar input limits (voltage, current, power).
2.Verify panel specs (Voc, Imp, Pmax).
3.Decide on connection:
(1)Series: Increases voltage (e.g., if station handles 60V and each panel is 19V, up to 3 panels).
(2)Parallel: Increases current (e.g., if station handles 20A and each is 5A, up to 4 panels). Ensure total stays within limits. JJN panels support both with MC4 connectors.

No, JJN solar panels only have MC4 connectors. Connect to a power station or charge controller for USB output.

It depends on wattage and if paired with a battery/power station:
50-100W (e.g., SP100L): Smartphones, tablets, cameras, small lights.
100-200W (e.g., PV200): Laptops, portable fridges, fans.
200W+: Electric coolers, TVs, power stations for extended use. For consistent or nighttime power, add a battery.

A 400W panel powers small to medium devices like LED lights, laptops, fans, and kitchen gadgets. Ideal for camping/RVs; connect to a generator for storage and post-sunset use.

Yes, but pair with a deep-cycle battery and solar charge controller for storage when sunlight is unavailable. A 200W panel provides enough for an average 12V fridge (320-640Wh/day), depending on sunlight, weather, and efficiency.

No, JJN portable panels do not have built-in batteries; they generate DC power for direct charging or storage in separate power stations/batteries. This keeps them lightweight and focused on solar capture.

Efficiency is measured under Standard Test Conditions (STC) in labs. JJN's monocrystalline panels achieve 23.4-25% efficiency, though real-world performance varies with sunlight, temperature, and angle. Assume ~75% of rated wattage during daylight.

Multiple factors include weather, sun intensity, shading, panel orientation, temperature, location, dust, and dirt. For example, shadows or overcast skies reduce output; high temperatures can lower efficiency despite cold improving cell performance slightly.

1.Set up correctly: Orient south (in Northern Hemisphere) with proper tilt via kickstands.
2.Avoid shadows: Even partial shade reduces output.
3.Keep clean: Remove dirt/debris.
4.Prevent overheating: Ensure good air circulation. Use in cool atmospheres.

No, as there's no sunlight (moonlight yields <0.3% output, impractical). Charge a power station during the day for nighttime use.

Yes, cold can slightly improve efficiency, but shorter days, weaker sunlight, and snow reduce output. Clear snow and adjust angle for optimal capture.

Yes, Our rigid solar panels are suitable for rooftop installation and offer broader application scenarios than portable solar panels.

10-25 years, depending on quality, usage, and maintenance. JJN's monocrystalline models with ETFE coating and fiberglass are built for durability, often lasting 20-25 years.

Avoid covers during use. Set up in direct sunlight, use kickstands for tilt, and connect via MC4 cables.

Use a soft cloth or sponge with mild soap and water. Avoid abrasive materials or high-pressure washers to prevent damaging the ETFE coating. Clean regularly to remove dust/dirt for optimal efficiency. Clean up with alcohol only. Dust and sediment are cleaned with a dry cloth.

Components, controllers that match the components, batteries that meet system requirements, and cables of corresponding specifications are required. If AC power is required, add an inverter to provide AC output.

The amount of electricity produced by solar panels can be affected for a number of reasons. Such as sunlight, temperature, glass surface dirt and stains.

Solar panels can be connected in series or parallel to meet your circuit size and power needs. Connecting the solar panels in series will make their operating voltage outputs superimposed, and the system current output will be the same as one panel. Connecting solar panels in parallel has a different effect; The operating current output of the individual panels will be added.

We suggest no. Walking on a solar panel can put too much pressure on a small area, potentially causing cracks and damage to the panel.

Mono-component cells are round chamfered and Poly-components are straight chamfered.

Normal power generation, but the generation efficiency will be reduced.

All components can be used with off-grid and grid-connected systems (except portable rechargeable PV products).

There are mounting holes, leakage holes, and ground holes on the frame of each component.

The component itself is equipped with a junction box connector output voltage. To access the off-grid system, you'll need to purchase appropriate additional wiring.

There is no supporting bracket when the components are sold. You need to purchase "Z" bracket from JJN website for installation.

It can be used, but must be connected to a controller. When selecting the controller, it is necessary to adapt the maximum component input power that the controller can access (not exceeding).

The extension cable between the component and the component is kept with the same specifications as the component connector wiring. At the same time, be careful not to extend the cable more than 2M, because the longer the extension cable, the higher the line loss, and the temperature of the cable will rise and there is a safety hazard. For the extension cable connected to the controller after series/parallel connection of the components, please confirm the specification of the extension cable according to the current of the components after series and parallel connection.

Positive and negative labels are marked on the connector heads of the component connectors.

The open voltage is a standard value, which is determined by the physical characteristics of photovoltaic modules.

The main difference is in the efficiency of the cells used, resulting in different power generation efficiency. High-power modules require fewer quantities to meet demand, making installation and wiring more convenient.

Flexible components: easy to install, applicable to more scenes, lightweight, easy to move and place does not occupy space, the disadvantage is that the mechanical properties are slightly weak load resistance is not strong, low conversion efficiency. Bezel assembly: advantages of strong load resistance mechanical properties, higher conversion efficiency. Disadvantages: installation on the roof of the car requires drilling, installation trouble. Electrical performance.

The bracket is suitable for flat installation, in addition, we recommend purchasing 2 sets of brackets when purchasing the bracket in order to ensure the tightness of the installation subsequently.

This bracket is not suitable for wood, plastic and other mechanical properties of insufficient or easy to thermal expansion and contraction of the plane.

The product adopts the bolt installation method, which requires prior drilling of holes in the plane, fixing the bracket and then installing the components on the bracket.

The bracket is suitable for flat installation, in addition, we recommend purchasing 2 sets of brackets when purchasing the bracket in order to ensure the tightness of the installation subsequently.

This product is mainly used for flat installation. The recommended applicable scenario is the roof (height not exceeding 2 meters).

This product mainly adopts the bolt installation method. This product mainly adopts the bolt installation method, please refer to the official website for the specific tools and related accessories required.

For installation, please punch holes in the equipment. For installation, please drill holes on the plane beforehand, then fix the bracket on the plane first, then install the parts connected with the component, and finally connect the component with the bracket to complete the installation.

This bracket is not suitable for planes with insufficient mechanical properties or susceptible to thermal expansion and contraction such as wood and plastic.

In most cases, this is related to setup rather than a product defect.

1.Place the panel in direct, unobstructed sunlight.
2.Ensure all cables and connectors are fully seated.
3.Confirm your power station or charge controller is powered on.
4.Try connecting the panel to another compatible device to quickly rule out equipment issues.

Solar output naturally varies with environmental conditions.

1.Reduced sunlight (morning, evening, cloudy or rainy weather) can lower output.
2.Even small shadows, dirt, or debris can significantly impact performance.
3.Adjust the panel angle to face the sun directly for best results.
4.Extremely hot temperatures may slightly reduce efficiency—this is normal.
5.Using long or thin extension cables can cause power loss; shorter, thicker cables work best.

This behavior is normal for all solar panels and does not indicate a quality issue.

Not necessarily.

1.Verify the power station supports the panel’s voltage and wattage range.
2.Some power stations require a specific adapter cable to recognize solar input.
3.Restart the power station and reconnect the panel to reset the input detection.

Light surface scratches are cosmetic and won’t affect performance.

If the glass is cracked or cells are damaged, please do not attempt self-repair.

Our support team will be happy to assist with warranty coverage or replacement options.

This is usually normal system behavior.

1.Passing clouds or moving shadows can cause temporary fluctuations.
2.Many power stations automatically stop charging when the battery is full.
3.Overheating protection may activate in very hot conditions—ensure good airflow around the panel.
4.Check cables regularly for signs of wear, looseness, or moisture.

This is often related to configuration rather than panel quality.

1.Mixing panels with different wattages or voltages can reduce overall efficiency.
2.Make sure all panels are oriented at the same angle toward the sun.
3.Confirm you are using series or parallel connections correctly for your setup.

Use the adapter cables included with your panel.
If needed, universal MC4-to-DC adapters are widely available and fully compatible.