OptiSolex 400W Portable SolarBag (Kit)
- True 440W Output:10% higher than conventional products.
- Ultra-Portable: 17.2 lbs foldable, 50% smaller and lighter, backpack-friendly.
- 25% N-TYPE Efficiency: Up to 25% conversion efficiency, industry-leading.
- Zipper Design: Dual 220W panels, deploy separately for angles or split power.
- High Compatibility: Connect to power stations or 12/24/48V batteries directly with S1.
US/EU/UK
- SolarBag: ships within 24 hours.
- Kit: SolarBag ships within 24 hours; SolexBrick S1 by November 30.
AU Expected to begin shipping on November 30
17.2 lbs
Compact & Portable
Zipper Design
440W→Dual 220W
Rated 440W Output
Higher Efficiency
N-Type Cells
Directly Charges
RV Battery with S1
Plug & Play Expansion
SolarBag
SolarBag Kit
Big Power in a Small Package
Free up room for gear that matters — no more choosing between solar panels and your cooler.
Pack Lighter, Do More
Charge both RV battery and power station at the same time.
Power Faster, Wait Less
Turn peak sunlight into max power- charge 1kWh in less than 3 hours.
*Actual charge time varies by location and weather.
Rated Power 440W: More Energy, Every Day
Split for lightweight camping, or combined for RV trips. One kit does it all.
Fits 80% of Power Stations
Split into 220W for larger power stations (no extra purchase), or combine multiple 440W SolarBag units for large power stations. One solution, all sizes.
Deploy Anywhere,
Harvest Every Ray
Deploy the SolarBag in seconds wherever the sun shines brightest, even on slopes. The included carabiners make securing it easy for windy days.
Tough & No Space Taken
S1 is palm-sized and doesn't need to be fixed or installed inside your RV. Just set it in a cool, shaded spot. It's weatherproof, rugged, and heat-tolerant, so you can focus on your journey.
440W SolarBag Kit
Other Solar Panels+Controllers
~$569.99 (includes controller)
$400–$700 panel + ~$100–$200 controller
Yes — S1 included
Usually sold separately
External, doesn’t occupy interior space
Requires indoor mounting and ventilation
No installation required — plug & play
Requires wiring, mounting, and integration
Auto-detects 12V/24V/48V
Manual setting required
Palm-sized (1/6 the volume)
Typically large (box-mounted)
Panels split into 2×220W for flexible use
One fixed foldable unit
20 feet 8AWG cables are included
Cables are seldom included
10 years for SolexBrick S1, 3 years for SolarBag
1-2 years for controller, 2-5 years for panels
What's in the box
400W Portable SolarBag Kit
400W Portable SolarBag
Specifications
440W Portable SolarBag
440W
42V/21V
11.1A
36V/18V
5V/3A, 9V/3A, 12V/3A, 15V/3A, PD45W max
5V/3A, 9V/2A, 12V/1.5A, 15W max
5V/3A, 9V/3A, 12V/3A, 15V/3A, PD18W max
170*160*0.4cm (66.93*62.99*0.16in)
53.5*43.5*11.5cm (21.06*17.16*4.53in)
7.8kg (17.2 lbs)
Specifications
SolexBrick S1
10-50 VDC
Auto 12/24/48V
50A
230W@5V, 450W@12V
MCS230
10AWG DC Output Cable 8AWG
-40°F to 149°F/-40°C to 65°C
0%-99%, No Condensation
5000m
111.0*4.2*3.0cm(4.33*1.6*1.18 in)
300g (0.66 lbs)
Support
Is the SolarBag compatible with my power station ?
Here's a quick way to check compatibility:
1. Refer to the user manual of your power station and locate the solar input specifications.
2. The optimum operating voltage & current of the OptiSolex 440W Portable SolarBag are: 42V, 11.2A.
3. If your power station maximum input voltage (Voc) and input current are equal to or higher than these values, the SolarBag should work safely with your power station.
Still have doubts? Our team is here for you at support@optisolex.com.
What kinds of devices can be charged with this kit?
OptiSolex 440W Portable SolarBag Kit can charge LiFePO₄ (LFP) 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 220W 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.
Why is my portable solar panel underproducing?
The output performance of solar panels is dependent on multiple factors. These include sunlight intensity, temperature, and weather conditions. Indirect sunlight, rising temperatures, cloudiness, and dust and dirt build-up can reduce the output of your solar panel.
How should I connect multiple solar panels for my system? Should I use a series or parallel configuration?
440W solar panel blanket can be connected in series or parallel configuration or array. How you choose to connect multiple solar panels depends both on the size of your off-grid solar system and your power needs. Connecting solar panels in a series increases the voltage of the system, leaving the system current output the same as a single panel. The total amount of voltage of a series-connected array can be measured by multiplying the voltage output of a single panel by the number of panels. Or if you have panels of different voltages you add the voltage of each panel to get the total voltage of the array. Connecting solar panels in parallel increases the current of the array and maintains the voltage output of a single panel. The total current of a solar array connected in parallel can be measured by multiplying the current of a single panel by the number of panels. Make sure the open circuit voltage of the connected panels does not exceed the maximum DC input voltage of the power station or controller.
Why does the shipped product show 400W, while the advertised power is 440W?
The packaging says "SolarBag 400" but the product is the 440W OptiSolex SolarBag. It has been renamed to reflect its official 440W STC rating (up from 400W for realistic expectations), meaning you get ~10% more power than similar solutions.
Can I leave the SolarBag outdoors for long periods?
No. The SolarBag is designed for portable and temporary outdoor use. Long-term exposure to sunlight, rain, or outdoor environments can significantly shorten its lifespan.
If you plan to install the panel in a fixed outdoor location, we recommend using a rigid solar panel instead.
What should I do if part of the SolarBag is under shade?
Avoid long-term shading. If the SolarBag is placed in an area with persistent or partial shadow, it may cause hot spots that could damage the solar cells and burn the panel.
Always keep the SolarBag in direct sunlight during operation for the best performance and safety.
How to Charge Your Power Station with OptiSolex 440W Portable SolarBag
How to Charge Your Lithium Battery with the OptiSolex 440W SolarBag & SolexBrick S1 MPPT Controller
What do our users say?
Solar enthusiast Reewray Outdoors puts the 17.2lb OptiSolex 440W SolarBag head-to-head with a conventional 400W panel. His video reveals its superior efficiency, shading tolerance, and overall power gain.
Frugal Off Grid has been living off the grid for 5 years. In this video, he compares the OptiSolex 440W SolarBag with other popular solar panels—and shows how it delivers impressive power output while remaining remarkably compact and easy to carry.
The Old Jarhead shares his top priorities when choosing a solar panel for off-grid living, introducing the Optisolex 400W SolarBag as a game-changing solution. He demonstrates real-world performance, and shows how this SolarBag fits into his off-grid routine, offering reliable, portable power for cabins, camping, and emergencies.