... 30W, the life 25 years, maintains for 5 years.2, solar energy special-purpose accumulator cell 38AH, 2 year maintenance, life ... .8 meters.5, solar energy lamp special-purpose numerical code controller. Life 10 years, 1 year maintenance.6, system: Excessively sufficient, has ... temperature: - 40°C--+70°C.9,windproof intensity: 120km/hour. solar lamp