... system, and receive 20% -30% more energy efficiency than ordinary solar street lights. Long life, once installed eight ... protection, overdischarge protection, waterproof, and many other features, life expectancy ≥ 5 yearsPressing the battery box: mold, full ... waterproof seal, better insulation, life expectancy ≥ 20 yearsLight source life: 100000hThe above configuration is for reference only, ...