Baintech BSMARTFLEXI150 150 Watt Flexible Solar Panel

Lightweight, high-efficiency flexible solar—freedom to go further off-grid without the weight penalty.

Product Overview

The Baintech BSMARTFLEXI150 is a 150 watt flexible solar panel built around premium SUNPOWER monocrystalline cells delivering 20.5–23.5% efficiency. This isn't your standard flexible panel—the SUNPOWER cell technology extracts more power from available sunlight, maintaining stronger output even in cloudy conditions or low-light situations where cheaper panels fall short.

At just 3.3kg and only 3mm thick, this flexi panel replaces bulky glass panels that add weight and create wind resistance on roof-mounted installations. Perfect for caravans, camper trailers, boats, and 4WD canopies where every kilogram counts and aerodynamic profile matters. The flexible design conforms to curved surfaces like caravan roofs or boat decks, and the slimline profile reduces wind noise and drag compared to traditional framed panels.

Designed for DIY installation or professional fitment, the flexi panel bonds directly to clean surfaces using appropriate adhesive, eliminating the need for heavy mounting frames and rails. Ideal for tourers who want to extend off-grid capability without permanent sites or generator noise, giving you the freedom to stay longer at remote camps while keeping batteries charged.

Key Specifications

• Power output: 150W nominal
• Solar cell technology: SUNPOWER monocrystalline
• Efficiency: 20.5–23.5%
• Dimensions: 106cm × 53.6cm × 0.3cm (3mm thickness)
• Weight: 3.3kg
• Design: Flexible, semi-rigid construction
• Surface type: Slimline, aerodynamic profile
• Application: Caravan, 4WD, marine, camper trailer roof mounting
• Installation: Adhesive bonding to clean surfaces

Features & Benefits

SUNPOWER High-Efficiency Cells: SUNPOWER monocrystalline technology delivers 20.5–23.5% efficiency, significantly higher than standard flexi panels that typically achieve 15–18%. This means more power generation from the same roof space, critical when mounting area is limited on caravan or canopy roofs. The high efficiency also maintains better output in overcast conditions or during shoulder season touring when sun angles are lower.

Ultra-Lightweight at 3.3kg: Weighs a fraction of equivalent glass panels that can exceed 10–12kg. This weight saving matters for caravans operating near maximum towing capacity, boats concerned with top-weight distribution, and 4WDs carrying gear on roof racks. Three of these panels weigh less than one traditional framed panel.

Slimline 3mm Aerodynamic Profile: The barely-there 3mm thickness creates minimal wind resistance and virtually eliminates the wind noise associated with traditional raised solar panel mounting. Reduces fuel consumption impact from roof-mounted solar and looks cleaner than bulky frames. Less likely to catch low-hanging branches on tight bush tracks.

Flexible Design for Curved Surfaces: Semi-rigid construction allows the panel to conform to gently curved surfaces like caravan roofs, boat decks, or canopy tops. This flexibility also provides some resilience against minor impacts from branches or camping gear, though the panel should still be treated with care.

Direct Adhesive Installation: Bonds directly to clean, prepared surfaces using appropriate marine-grade adhesive (not included). Eliminates the weight and complexity of mounting frames, brackets, and rails. Faster installation for DIYers and cleaner finished appearance. Ensure surface preparation follows manufacturer guidelines for reliable long-term bonding.

Performs in Low Light: The SUNPOWER cell technology continues generating useful power in cloudy conditions, early morning, or late afternoon when lower-efficiency panels barely produce. This extends your effective charging window throughout the day, particularly valuable during winter touring or in variable weather conditions.

Professional or DIY Installation: Suited to both professional caravan/marine installers and competent DIYers. The lightweight, frameless design simplifies handling and positioning compared to manoeuvring heavy glass panels onto roofs. Just ensure proper surface preparation and appropriate adhesive selection.

Technical Specs

• Rated power output: 150W
• Cell type: SUNPOWER monocrystalline
• Cell efficiency: 20.5–23.5%
• Panel dimensions: 106cm (L) × 53.6cm (W) × 0.3cm (H)
• Panel weight: 3.3kg
• Construction: Flexible/semi-rigid
• Surface profile: Low profile, aerodynamic
• Mounting method: Adhesive bonding (adhesive not included)
• Warranty: Refer to Baintech warranty documentation
• Solar Cell Type: Mono Solar Cell
• Power Tolerance: +-3%
• Max.power.(PMX) 150W
• Voltage at Pmax: (Vmp) 26V
• Current at Pmax: (Imp) 5.77A
• Open Circuit Volatge: 307.V
• Short Circuit Current: 6.23A
• Maximum Seriex Fuse: 15A
• Size: 1060 x700 x 3mm
• Standard Test Condition: AM 1.5 1KW/m2 25C

Compatible With / Goes Well With

• 12V MPPT solar charge controllers (10A–30A rating)
• 12V PWM solar charge controllers
• LiFePO4 lithium batteries for off-grid power systems
• AGM and gel deep-cycle batteries
• Caravan and camper trailer roof mounting
• 4WD canopy and roof rack installations
• Marine deck and cabin top mounting (confirm waterproof rating)
• MC4 solar cable connectors and extension cables
• Anderson plug solar connection systems
• Inline fuses or circuit breakers for solar arrays
• Marine-grade adhesives (Sikaflex, 3M VHB tape)
• Cable entry glands for roof penetrations
• Additional flexi panels for expanded solar capacity

Note: Confirm voltage and current specifications from Baintech documentation before selecting solar controller and wiring configuration.

Frequently Asked Questions

What adhesive should I use to mount this panel?  Use a high-quality marine-grade flexible adhesive like Sikaflex or 3M VHB tape designed for outdoor UV exposure and temperature cycling.

Can this panel be walked on?  No. While the flexible construction provides some resilience, these panels are not designed for foot traffic.

Will this panel work with my MPPT solar controller? Yes, flexi panels work with standard MPPT or PWM solar controllers.

How does this compare to a rigid glass panel? The flexi panel offers weight savings, aerodynamic benefits, and curved-surface mounting capability

Can I connect multiple flexi panels? Yes, panels can be wired in series, parallel, or series-parallel depending on your system voltage and current requirements.