The Helios Sheet | 100W/200W Mono Flexible Solar Panel with MPPT Controller

Save 20%
East Supplier PlatformSKU: 4000772420364-200w-canada

Color: 200w
Price:
$496.10 $620.12

Tax included Shipping calculated at checkout

Stock:
In stock

Description

The sun delivers 173,000 terawatts of energy to Earth continuously. Your job is to capture a few hundred watts of it — reliably, efficiently, and without adding 40 pounds of glass and aluminum to your roof. The Helios Sheet is a mono-crystalline flexible solar panel available in 100W and 200W configurations, paired with a 20A or 10A MPPT solar charge controller. Unlike rigid glass panels that demand flat surfaces and reinforced mounting, the Helios Sheet bends to follow curved RV roofs, boat decks, and irregular surfaces that traditional panels cannot touch.

The mono-crystalline cells deliver higher conversion efficiency than poly-crystalline alternatives, particularly in low-light and partial-shade conditions — the difference between keeping your batteries topped off on an overcast Tuesday and coming back to a dead system. The included MPPT controller extracts up to 30% more power from the same panel compared to PWM controllers by continuously tracking the panel's maximum power point as temperature and irradiance shift throughout the day.

Energy independence is not measured in kilowatts. It is measured in the confidence that your batteries will have power tomorrow morning — regardless of what the weather does tonight.


Key Features

  • Mono-Crystalline Cell Technology: Higher conversion efficiency than poly-crystalline — up to 22% cell efficiency — with superior low-light and partial-shade performance
  • Flexible, Bendable Design: Conforms to curved RV roofs, boat decks, camper shells, and irregular surfaces — no rigid aluminum frame required
  • MPPT Charge Controller Included: 20A/10A MPPT controller extracts up to 30% more energy than PWM — dynamic maximum power point tracking throughout the day
  • 100W / 200W Options: Choose based on your battery bank size and daily consumption — single panel or parallel array configurations
  • Ultra-Lightweight Construction: A fraction of the weight of glass panels — critical for RV roof load limits, marine applications, and portable setups
  • Weather-Resistant ETFE Coating: Durable surface layer protects cells from UV degradation, salt spray, and impact — rated for years of outdoor exposure

Technical Specifications

  • Power Options: 100W, 200W
  • Cell Type: Mono-crystalline silicon
  • Cell Efficiency: Up to 22%
  • Controller: MPPT 20A (200W kit) / MPPT 10A (100W kit)
  • Controller Type: MPPT (Maximum Power Point Tracking)
  • Panel Construction: Flexible, bendable (no rigid frame)
  • Surface Coating: ETFE weather-resistant layer
  • Application: RV, marine, camper, off-grid cabin, portable solar generator charging
  • Battery Compatibility: 12V lead-acid, AGM, gel, LiFePO4 (via MPPT controller settings)
  • Origin: Mainland China

Application Scenarios

The Helios Sheet serves the growing community of mobile energy users who refuse to be tethered to shore power or generator fuel. RV and van-life travelers mount it to curved roofs where rigid panels cannot sit flush, gaining 100-200W of silent, fuel-free charging that runs refrigerators, lights, and device charging indefinitely. Sailors and boat owners use the flexible form factor to conform to cabin tops and deck surfaces — the salt-spray-resistant ETFE coating survives marine environments that corrode aluminum-framed panels within a season. Off-grid cabin and tiny-home builders deploy multiple Helios Sheets in parallel through the MPPT controller, building scalable solar arrays without the structural reinforcement that heavy glass panels demand. The MPPT advantage is most pronounced in these applications: partial shading from trees, variable cloud cover, and morning/evening low-angle sun — precisely the conditions where PWM controllers leave power on the table.


Frequently Asked Questions

Q: What is the real advantage of MPPT over PWM — is it worth the cost difference?

A: MPPT controllers continuously track the panel's maximum power point, which shifts with temperature and irradiance. In real-world conditions — especially mornings, evenings, cloudy days, and cold weather — MPPT extracts 20-30% more energy from the same panel compared to PWM. For a 200W panel, that is an extra 40-60W during marginal conditions — often the difference between a full battery bank and a partial charge. If your system includes LiFePO4 batteries or experiences frequent partial-shade conditions, MPPT is not optional; it is essential.

Q: How flexible is the panel — can I bend it around tight curves?

A: The panel can conform to gentle curves (RV roofs, boat cabin tops) with a minimum bend radius of approximately 30 degrees. It is not designed for sharp 90-degree folds — the mono-crystalline cells will crack under extreme bending. For installation on moderately curved surfaces, the panel bends smoothly and can be adhered directly with silicone or VHB tape.

Q: Can I connect multiple Helios Sheets together for a larger array?

A: Yes. Panels can be connected in parallel (for matching voltage, additive current) or series (for additive voltage). For parallel arrays, ensure the MPPT controller's current rating can handle the combined output. For series configurations, verify that the controller's maximum input voltage exceeds the sum of the panels' open-circuit voltages — exceeding this limit will damage the controller.

Q: Does the flexible construction affect long-term durability compared to glass panels?

A: Flexible panels have a shorter rated lifespan than glass panels — approximately 5-10 years vs 20-25 years for rigid glass panels. However, the ETFE coating provides excellent UV and impact resistance for flexible-panel standards. The primary tradeoff is lifespan for weight and mounting flexibility. For permanent residential installations, rigid glass panels remain the better long-term investment. For mobile, marine, and temporary applications where weight and mounting flexibility are critical, flexible panels are the superior choice.

Q: Will this panel charge a LiFePO4 (lithium iron phosphate) battery?

A: Yes. The MPPT controller can be configured for LiFePO4 battery charging profiles. You must set the correct charging parameters (absorption voltage, float voltage, equalization off) through the controller's interface before connecting the battery. LiFePO4 batteries have different voltage requirements than lead-acid — using the wrong profile will undercharge or damage the battery.


Customer Reviews

Customer Reviews

Based on 6 reviews
67%
(4)
33%
(2)
0%
(0)
0%
(0)
0%
(0)
T
Tom B.
Solid panel, make sure your controller settings are right

The panel itself is great — flexible, lightweight, and the mono cells perform noticeably better in partial shade than my old poly panels. I docked one star because the MPPT controller defaulted to lead-acid and I had to manually switch to LiFePO4 mode. Once configured correctly, charging is flawless.

C
Catherine W.
Sailboat-ready — survived salt spray season

Mounted a 100W Helios Sheet on the cabin top of my 32-foot sailboat. The flexible form factor conformed to the slight dome, and the ETFE coating has shown zero corrosion after a full season of salt spray. The MPPT controller keeps my house battery topped off even on overcast days.

M
Mike R.
Curved RV roof? No problem — this bends

Class B campervan with a curved fiberglass roof — rigid panels were never going to work without ugly brackets. The Helios Sheet 200W kit adhered directly to the roof curve and has survived 3,000 miles of highway driving. The MPPT controller consistently pulls 20-30% more wattage than my old PWM. LiFePO4 battery bank is fully charged by noon most days.

T
Tom B.
Solid panel, make sure your controller settings are right

The panel itself is great — flexible, lightweight, and the mono cells perform noticeably better in partial shade than my old poly panels. I docked one star because the MPPT controller's default settings were configured for lead-acid, and I had to manually switch to LiFePO4 mode (hold the button for 5 seconds, cycle through to 'LI' setting). Once configured correctly, charging is flawless. Documentation could be clearer on this, but the hardware is solid.

C
Catherine W.
Sailboat-ready — survived salt spray season

Mounted a 100W Helios Sheet on the cabin top of my 32-foot sailboat. The flexible form factor conformed to the slight dome of the cabin roof, and the ETFE coating has shown zero corrosion after a full season of salt spray. The MPPT controller keeps my house battery topped off even on overcast days when my old PWM setup would have left me running the engine to charge. For marine applications, this is the right panel at the right price.

Payment and Security

PayPal

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Estimate shipping

You may also like

Recently Seen