Product Overview
This 4W 5V polycrystalline solar panel provides a nearly square solar surface for compact lighting and electronics projects. The 172 x 175mm footprint suits layouts where a narrow strip-style panel is less convenient, while the approximately 3m lead gives room to route the connection away from the panel.
EVA lamination encloses the cells in a 2mm-thick module. The attached DC5521 plug connects to a matching socket in your project.


Key Features
- 4W rated power with a 5V operating voltage for matched small DC circuits.
- Polycrystalline silicon cells arranged in a compact, nearly square panel.
- Approximately 3m of cable helps separate the sunny panel position from the electronics.
- A DC5521 barrel plug avoids the need to terminate bare panel leads at the device end.

Compatibility & Notes
Check connector fit, polarity and the connected circuit's voltage and current requirements. A 3.7V battery requires an appropriate charging controller and protection circuit; the panel should not be wired directly to a bare cell. Confirm the complete circuit design before using it for garden lighting or other battery-powered projects.
Power varies with sunlight, orientation, temperature and load. Keep the panel clear of shading and secure the cable so that its connection is not pulled during use.
Details & Specs
| Rated power | 4W |
|---|---|
| Operating voltage | 5V |
| Operating current | 0-800mA |
| Short-circuit current | 900mA |
| Cell material | Polycrystalline silicon |
| Construction | EVA lamination |
| Panel dimensions | 172 x 175 x 2mm |
| Output plug | DC5521 |
| Cable length | Approximately 3m |




