2.1W 18V Long Rectangular Mini Solar Panel, ETFE, 247×44.5mm
Product Overview
This 2.1W 18V mini solar panel is built for projects that need solar input in a long, narrow footprint. Measuring 247 × 44.5 mm, it combines a textured ETFE surface with SunPower back-contact solar cells SMT-mounted to a PCB. The slim rectangular format fits elongated housings and mounting areas that cannot accommodate a conventional square panel.
Key Features
- 2.1W at 18V: Provides a compact solar input for low-power electronics and energy-harvesting systems.
- Long rectangular footprint: The 247 × 44.5 mm shape makes efficient use of narrow mounting space.
- Durable ETFE surface: Waterproof, UV-resistant, and scratch-resistant construction supports outdoor product integration.
- Back-contact SMT construction: SunPower solar cells are mounted to the PCB with electrical contacts kept on the rear.
- Polarity-marked solder pads: Two bare copper pads provide a straightforward connection point for custom wiring.
- OEM-ready format: Contact LinkSolar about custom dimensions, outlines, lead wires, or connectors for production projects.
Best For
A practical choice for long, slim enclosures, remote sensors, weather-station components, low-power monitoring equipment, and custom OEM devices where a square panel will not fit.
Details & Specs
| Rated maximum power | 2.1 W |
| Rated voltage | 18 V |
| Dimensions | 247 × 44.5 mm |
| Shape | Long rectangle |
| Surface | Waterproof, UV- and scratch-resistant ETFE |
| Cell and build | SunPower back-contact cells, SMT-mounted to PCB |
| Connection | 2 polarity-marked rear copper solder pads |
| Single-panel net weight | Approximately 26 g |
Compatibility & Notes
Use a charge controller or regulator suited to the connected device or battery; do not assume direct compatibility from the 18V rating alone. Output varies with sunlight intensity, angle, temperature, controller, battery, and overall system setup. Waterproof construction does not assign a specific IP rating or imply suitability for submersion. Protect the exposed PCB and solder pads from mechanical impact and excessive vibration in the finished assembly.
Need a different footprint or termination? Contact LinkSolar about custom panel dimensions, outlines, lead wires, or connectors.
Buyer questions
What kind of project is 2.1W at 18V for?
Low-power electronics and energy-harvesting systems that need solar input in a long, narrow footprint. The 247 × 44.5 mm rectangle fits slim enclosures, remote sensors, weather-station components, low-power monitoring equipment and custom OEM devices where a square panel will not fit.
Can I wire it straight to a 12V battery?
Not directly. Use a charge controller or regulator suited to the connected device or battery, and do not assume direct compatibility from the 18V rating alone — output varies with sunlight intensity, angle, temperature, controller, battery and overall system setup.
How do I connect it?
Two polarity-marked bare copper solder pads on the rear give a straightforward connection point for custom wiring. Protect the exposed PCB and solder pads from mechanical impact and excessive vibration in the finished assembly.
Is it waterproof?
The ETFE surface is waterproof, UV-resistant and scratch-resistant for outdoor product integration, but the page assigns no specific IP rating and the construction does not imply suitability for submersion.
Can I get a different footprint or termination?
Yes — custom dimensions, outlines, lead wires or connectors are available for production projects. MOQ depends on the product — ask us for the MOQ on your item.
LinkSolar supplies mini solar panels to B2B buyers; ships from China.
