Cast Aluminum Solar Led Road Stud 40T Compression. Lithium Battery Led Road Stud Compressive Resistance 40T. Flashing PC Solar Powered LED Road Stud Light For Road NK-RS-Q7. Body material: PC. Power supply: High efficient solar panel (5V/60mA) Battery: Lithium battery (3.2V/500mAh) Resistance: 15T. LED Color: White, Yellow, Blue, Red, Green.