Description

Product details

Solar street lights are grid-independent outdoor lighting units powered by photovoltaic (PV) panels that convert sunlight into electricity and store it in rechargeable batteries. How They Work • Daytime Charging: Solar panels absorb sunlight and convert it into DC electricity, regulated by a charge controller (PWM or MPPT) to safely charge the battery. • Dusk-to-Dawn Operation: A built-in voltage sensor detects when ambient light drops at dusk and automatically turns on the LED fixture. At dawn, the system turns off the light and resumes charging. • Smart Sensors: Many modern integrated units use microwave or PIR motion sensors to adjust brightness levels (such as dimming when no motion is detected to conserve battery power). Key Components • Solar Panel: Usually monocrystalline or polycrystalline silicon mounted at an optimal tilt angle. • Battery: Typically Lithium-ion or Lithium Ferro Phosphate (LiFePO4) for long life cycles, though older or budget models use lead-acid/gel batteries. • LED Luminaire: High-efficacy solid-state LED chips providing cool white or warm white illumination. • Controller & Casing: Weatherproof (typically IP65-rated) housings with built-in or remote controls.