Watts measure power consumption, while lumens measure light output. Higher wattage doesn't always mean brighter light—lumens matter more for brightness.

It depends on the application. For example, small signs need around 3.4 watts, while large billboards may need up to 25 watts. Pathways usually need 15–25 watts, and parking lots or highways may require up to 70 watts.

Yes. Most LEDs range from 3000K to 5000K. Coastal areas may need turtle-friendly lighting, which impacts wattage and output.

These controls adjust brightness based on activity. They reduce power use during inactive times while maintaining safety and visibility.

They define how light spreads. Type II is ideal for paths and roads; Type III and IV suit parking lots and larger areas.

Always work with a solar lighting specialist. They’ll help ensure the fixture meets both lighting and solar power requirements efficiently.

"Backup days" refers to how long your solar system can operate without sunlight. A sufficient number of backup days ensures your system continues running, even during cloudy or rainy periods when solar energy production is low.

On cloudy or rainy days, solar panels capture some energy, but not enough to fully charge the battery. Having a system with sufficient backup days ensures that the batteries can power your lights and equipment during extended cloudy or stormy days.

Batteries have a finite number of charge cycles. By using only a fraction of the battery’s power before recharging, you can extend its lifespan. Sizing your system for the appropriate number of backup days reduces stress on the batteries, helping them last longer—typically five to seven years with proper care.

Solar energy is weather-dependent, and some days may have minimal sunlight due to overcast or rainy weather. Having enough backup days ensures your system has stored enough energy to function, keeping lights and equipment operational during periods with little to no sunlight.