Solar Panel 15W 18V Photovoltaic

High Efficiency 15W 18V Polycrystalline Photovoltaic Module

Engineered to deliver reliable, off-grid energy generation in challenging environmental conditions, this 15-Watt polycrystalline solar module converts sunlight into clean, renewable electricity. Featuring an optimized cell layout and high-transmittance low-iron tempered glass, this panel maintains steady energy yield even under diffused ambient light, overcast skies, or low-angle morning and evening sun. It serves as an ideal baseline power module for off-grid battery maintenance, remote telemetry nodes, wireless communications, and low-power IoT infrastructure.

Rugged Weatherproof Construction and Integrated Circuit Protection

Built to endure long-term outdoor exposure, the module is encased in a heavy-duty anodized aluminum alloy frame that provides structural rigidity and outstanding corrosion resistance against wind, snow, and mechanical stress. The front surface uses impact-resistant tempered glass, while the rear junction box is IP65 rated against water ingress and dust accumulation. The integrated junction box features internal bypass diodes that prevent hot-spot cell damage, mitigate thermal degradation, and minimize power loss caused by partial shading or debris across the solar surface.

Optimized 12V Battery Charging and Field Systems Integration

With a maximum power voltage (Vmp) of 17.5V and nominal 18V solar circuit rating, this panel provides necessary voltage overhead to efficiently charge 12V battery configurations through standard PWM or MPPT charge controllers. It supports diverse battery chemistries, including Sealed Lead-Acid (SLA), Absorbed Glass Mat (AGM), Gel, and Lithium Iron Phosphate (LiFePO4). The compact footprint makes it highly suitable for powering remote environmental monitors, agricultural automation valves, automatic gate operators, security lighting, traffic signage, and trickle-charging backup systems.

Key Technical Specifications and Electrical Parameters

Operating at a peak rating of 15 Watts (Pmax), the panel delivers a maximum power current (Imp) of 0.86 Amperes and an open-circuit voltage (Voc) of 21.6 Volts under standard test conditions (STC: 1000 W/m2, 25 degrees C, AM1.5). The short-circuit current (Isc) is rated at 0.98 Amperes. Pre-drilled mounting holes along the rear aluminum frame allow seamless integration with pole mounts, tilt brackets, flat surface fixtures, or custom electronics enclosures.