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Frequently Asked Questions
Solar Bag Solar Panel SolexBrick S1 Non Product
What kinds of devices can be charged with this kit?

OptiSolex 400W Portable SolarBag Kit can charge batteries (solar charge controllers are required) and portable power stations. Just ensure the open circuit voltage of the solar panel does not exceed the maximum DC input voltage of any connected power stations or solar charge controllers. can charge batteries (solar charge controllers are required) and portable power stations. Just ensure the open circuit voltage of the solar panel does not exceed the maximum DC input voltage of any connected power stations or solar charge controllers.

Will installation take a long time if I'm a beginner?

It's not hard at all. The choice of battery/power station connection is slightly different and requires no complex electrical knowledge. Most users can complete the installation in 5-15 minutes following the tutorial and instructions.

Does the installation require specialized tools?

No professional tools are required and all accessories are included in the set. The manual can be provided with the steps of pictures and words.

Is it possible to power electronic devices directly?

Yes. Each 200W panel provides 3 outlets:Device support: Mobile (1-2 hours full) , tablet (2-3 hours) , laptop (2.5-4 hours) .Note: high-power equipment (e. g. refrigerators) must be relayed through batteries or power stations.

How long does it take to charge a RV battery?

Depends on battery capacity, sunlight intensity and other factors.For example, a 200Ah battery (12V) can be fully charged in about 5-6 hours under ideal sunlight. Overcast hours may be extended by up to 30% . Power generation status can be viewed in real time via the APP (Bluetooth connection to S 1 module is required) .Specific formulas can be used to estimate:Formula:Battery Capacity(X wh=VxAh)/Input Power(W)x 1.2 or more for buffer

What output voltages does the system support? Are there any limitations on the solar panel’s open-circuit voltage within the system?

The system automatically detects 12V, 24V, and 48V batteries.When using a 12V battery, the total open-circuit voltage of the solar panels must be ≥15V.Example: A single panel with an open-circuit voltage of 10V cannot charge a 12V battery (since 10V < 15V). However, connecting two such panels in series (e.g., via two S1 ports) will yield a total open-circuit voltage of 20V, making charging possible.For a 24V battery, the total solar open-circuit voltage must be ≥36V.For a 48V battery, the total solar open-circuit voltage must be ≥72V.Important Note:Each controller has a maximum voltage tolerance of 50V. Therefore, when using a single controller or parallel S1 connections, the input voltage per group must not exceed 50V.As a result, for 48V battery systems, only series connections are allowed. Single S1 units or parallel configurations cannot be used.

Can I walk on bendable/border components?

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.

Are there pre-drilled holes in the back of these panels?

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

Does the solar panel contain all the wiring?

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.

Can different brands of panels be mixed?

It is not recommended and must be used in accordance with the instructions.

Can this solar panel accommodate 12V/24V/36V/48V batteries?

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).

How many kilowatt hours can this solar panel produce in a day?

In the case of STC, the power generation is the product of standard power and time (W*H).

If the original mark/sticker no longer exists, how can the customer visually tell which cables are positive/negative?

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

Why do solar panels have higher open circuit voltages than other system components?

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

What is the difference between high power modules and low power 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.

Can I add more solar panels with the solarbag to expand my system?

Yes, but it is recommended to expand the system by adding the same solarbag. Also make sure that the input to the PV port of the expanded system meets the requirements of the controller.

Are these monocrystalline or polycrystalline panels?

They are monocrystalline modules.

Can I use this solarbag to charge my 120-volt outlet directly?

This solarbag can not be charged directly to the socket, because it does not provide AC power.

Can this kit charge two or more 12V batteries connected in parallel?

This solarbag supports 12V/24V battery system.

What is the role of alligator clips?

Use alligator clips can be directly connected to the positive and negative terminals of the battery to complete the function of charging, pay attention to the correct polarity of the alligator clips, otherwise it will damage the product.

What kind of extension cord should I buy on this panel when we eapand or reduce my system?

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.

Does anyone know what the four small straps with velcro are for?

Those straps are designed for storage. They make it easy to secure and stow the SolarBag after you've split it into two separate 200W solar panels.

Does shadowing affect power generation efficiency?

Anti-shadow technology ensures efficient power generation. Traditional system veneer shading leads to overall efficiency degradation; whereas SolexBrick S1 optimizes independently for each board, maintaining 100% output power for the other boards even with partial shading.

Are extreme environments available?

Operating temperature range: -40 °Fー149 °FHeavy rain/dust is still working normally.

Will installation take a long time if I'm a beginner?

Not at all. OptiSolex 200W Mountable Solar Kit is designed for 3-step plug-and-play setup: snap in the S1 → connect panels → plug into battery/power station—with visual instructions and a setup video included. Most users complete setup in 15–20 minutes.

Can I mix different solar panels?​​

Yes. Combine panels of ​​any brand, wattage, or type. S1’s distributed MPPT ensures each panel performs at its maximum, eliminating compatibility issues.

How do I install the SolexBrick S1 controller?​​

Simply connect each SolexBrick S1 directly to a solar panel via MC4 connectors—no expertise required. The 3-step setup (attach S1 to panel, link panels, connect to battery) takes minutes. No bulky central controller or complex wiring is needed.

What are the advantages of Optisolex MPPT technology?

MPPT advantages: S1's 4-channel design boosts reliability and stability, InstantMax ensures real-time peak efficiency, panel optimization maximizes output under shade, and intelligent system sync connects units seamlessly.

Can S1 be used with other MPPT controllers (in series or parallel)?

No. S1 controllers require mutual communication and compatibility. Other MPPT controllers are not compatible. If you wish to incorporate additional solar panels, we recommend purchasing more S1 units for greater flexibility.

Can it be installed outdoors permanently? Is it waterproof?

Yes, it can be installed outdoors. The S1 controller is rated IP68 for water resistance, but should not be submerged. When installing outside, avoid direct sunlight (e.g., mount it on the back of a solar panel). Proper usage conditions and operating environment will help maximize performance and lifespan.

Can the controller be connected directly to a load?

No. This controller is designed specifically for battery charging and cannot power loads directly, as it does not provide stable output power. Connect DC loads directly to the battery, or use an inverter to connect AC loads to the battery.

Is it normal for the controller surface to feel hot?

The controller may become warm during operation. Since the housing is metal, its surface temperature can reach 60°C–70°C, and may be even higher under direct sunlight. This is normal. ⚠️ Do not touch the surface during operation—it may cause burns, especially in sunny conditions.

Why won’t it charge? / Why did it suddenly shut down?

If the system stops charging or shuts down unexpectedly: Safe shutdown: Before performing any operations, always disconnect the PV panel input first, then disconnect the battery. Never perform live operations!

How Do I choose the Right Solar Package for me?

OptiSolex 400W Portable SolarBag Kit is suitable for powerstation, fast power supply and capacity expansion. 200W Mountable Solar Kit are suitable for battery/stationary installation scenarios. Please Consult Customer Service for special customized requirements.

How soon after purchase?

Standard Shipping time (2-7 days in USA) , other areas can be found in the Shipping section of the Policy page.

Does the installation require specialized knowledge?

Our products are designed for beginners, no complex electrical knowledge can be easily installed in accordance with the instructions, 3 steps can be quickly installed. Pay attention to the installation process manual attention to safety matters, there are problems please contact the customer service mailbox.

What is the maximum number of panels supported?

Series ≤2 blocks (voltage limit) , parallel ≤12 blocks (current limit).

Does shadowing affect power generation efficiency?

Anti-shadow technology ensures efficient power generation. Traditional system veneer shading leads to overall efficiency degradation; whereas SolexBrick S1 optimizes independently for each board, maintaining 100% output power for the other boards even with partial shading.

How long does it take to charge a battery pack?

It will vary depending on the battery you are using.Can be estimated using the following formula.Formula:Battery Capacity(X wh=VxAh)/Input Power(W)x 1.2 or more for buffer e.g. If the output of Solarbag 400 is around 380, a 12.8V 100AH battery(1280AH)can be fully charged in 1280/380 = 3.3 hours. Due to the weather may it be longer like 3.3 hour x 1.2=4hours. Normally a 100Ah battery can be fully charged half day. And in good weather the OptiSolex 400W Portable SolarBag can help you to charge 200Ah 12V Battery for daily use.

Are extreme environments available?

Operating temperature range: -40 °Fー149 °FHeavy rain/dust is still working normally.

How to clean solar panels?

1. When to CleanBest time: Early morning, late evening, or on a cloudy day. Avoid cleaning in direct sunlight or high heat to prevent damage26.2. What You’ll NeedWater (preferably soft or purified to avoid mineral stains)Soft brush, sponge, or microfiber cloth (no harsh materials like steel wool)Mild soap or solar panel cleaner (avoid strong chemicals or abrasive cleaners)Hose or low-pressure spray (no high-pressure washers, which can damage panels)3. How to CleanStep 1: Rinse with water to remove loose dirt.Step 2: Gently scrub with a soft brush/sponge and soapy water for stubborn grime (like bird droppings)Step 3: Rinse again to remove soap residue.Step 4: Let it air dry or wipe with a clean cloth (avoid leaving water spots)4. Safety TipsDon’t walk hard on panels—they can crack! Use a long-handled tool if neededAvoid extreme weather (high winds, rain, or snow) while cleaning.5. How Often?Every 2-6 months, depending on dust, pollen, or bird activity in your area.

What should I do if water gets into the equipment?

If Your Solar Equipment (IP67/IP68) Gets Flooded:Turn Off Power – Shut down the system immediately to prevent electrical hazards.Check the IP RatingIPX4 (Junction box of Solarbag): Can handle splashes (like rain), but NOT submersion or high-pressure waterIPX7(200W mountable solar panel): Can handle temporary submersion.IPX8 (S1): Can withstand deeper/longer submersion .Dry It OutUnplug and remove excess water.Let it air-dry completely (24-48 hours) or use silica gel packs.Do not use heat (like a hairdryer), as it may damage seals.Inspect for DamageLook for cracks, corrosion, or water inside.Test functionality before reconnecting.Consult a Professional – If unsure, contact the manufacturer or a solar technician

How long is the product guaranteed?

Solar panels:OptiSolex 400W Portable SolarBag:5 years 200W Mountable panel:3 years SolexBrick S1:10 years

How to apply for a warranty?

Send an email to support@optisolex. Provide the order number and fault description, and show the original purchase certificate (including purchase date and product details) , after technical confirmation, free repair or replacement (replacement parts to inherit the remaining warranty period)

How Do I get the installation video?

Web site Support → Video Tutorials. (TBC)

Download Center

440W Portable SolarBag User Manual

PDF optisolex

200W Portable Solar Panel User Manual

PDF optisolex

SolexBrick S1 User Manual

PDF optisolex

Video Tutorials

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How to Charge Your Power Station with OptiSolex 440W Portable SolarBag

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How to Charge Your Lithium Battery with the OptiSolex 440W SolarBag & SolexBrick S1 MPPT Controller