CALLING ALL DESIGNERS, ENGINEERS, & INVENTORS! Now you can create your own solar invention using the same patented modules found in our Window Solar Chargers. This is *just* the solar module, no battery or circuit board included. The back of the module has accessible positive and negative leads to measure and connect to. FEATURES & SPECS: Powerful Solar Panel: 20W of power. In full sunlight, generates up to 12V & 1.6A High Quality Materials: Top-shelf monocrystalline solar cells. Eye-catching Design: Patented herringbone solar pattern Durable: Weatherproof lamination and sturdy construction to withstand impact. Easy to Integrate Into Projects: Positive & negative leads to connect to on back side. Features 4 screw holes (1 in each corner) for easy attachment. Large Size: This deluxe solar module is roughly 19" x 19" Important Disclaimer: This is not a finished product. This offering is for designers and engineers who want to use our patented solar designs in their own inventions.