Can reduce the solar street lamps lighting electricity consumption, is an important way to save energy. 'By the' green lighting project, solar street lamps market in China in recent years has maintained sustained growth. Solar street light industry belongs to the emerging industry, thus present a rapid development speed. However, as the speed of development in the process of advancing the solar street lighting four big hidden trouble to show itself. 1, parts unqualified solar panels should be said that in the normal manufacturer production quality is guaranteed, the relevant test standards and test equipment has to be more perfect, from the solar street lamp manufacturers to buy solar street light there is a little note: power test board need special equipment. Government had no corresponding technical indicators monitoring measures, power panels to phenomenon makes some vendors in use due to power shortages, caused the solar street light does not work. 2, short battery life battery can generally normal manufacturer warranty for three years, if two years, the quality of the battery failure will have a problem. Battery installation is has certain particularity, the scene of the best temperature at 25 ℃ is trying to keep a constant, ventilation, must prevent the rain soaking and cannot make the battery, the battery working environment temperature is also cannot be ignored. Some manufacturers in order to save the installation in the light pole or the cost of the battery, will cause certain damage, reduce the service life of batteries. Accumulator is an important part of the solar street light system, its performance and life directly affects the running effect of solar street lamps. 3, light source, high failure rate of solar energy street light source, the cost is relatively low, but the highest failure rate. Light source with LED solar street lamps, energy-saving lamp, high-pressure sodium lamp, metal halide lamp and so on, in addition to the LED light source, the inverter will lead to power loss, so the design and manufacture are very professional. And some manufacturers often use low-cost sales approach, the product may be in a very short period of time of damage, for solar street lamps application caused great negative effects. Heat of the LED light source directly affect its life, heat treatment will cause the bad light, LED light source for more than 40 w is applied to cooling integrated light source. 4, the imperfection of the controller function controller control and protection of battery charging and discharging controller is part of the function is not perfect, the battery charge/discharge damage caused by excessive discharge. Controller should use the battery ( The residual capacity of SOC) Control method, ensure the battery SOC is not less than the set value, in order to protect the battery from the over discharge controller. Buy solar street lamps must choose normal solar street lamps manufacturer, quality assured, not covet petty gain, and cause great loss.