When sourcing solar reflectors (floodlights), you must prioritize the Luminous Efficacy, which should ideally be above 150 lm/W to ensure maximum brightness with minimal energy consumption. Check the Battery Type; Lithium Iron Phosphate (LiFePO4) batteries are superior to standard Li-ion due to their 2,000+ charge cycles and better thermal stability. Additionally, ensure the Solar Panel Type is Monocrystalline Silicon, as it offers a higher conversion efficiency (up to 21-23%) compared to polycrystalline alternatives, especially in low-light conditions.