When the 15W solar street light is used for outdoor lighting, it often encounters high temperatures, rainy and snowy weather, and the solar street lamp controller is usually installed in the lamp pole, which is easy to cause the short circuit between the water and the controller.

First, observe whether the terminal of the controller is rusty. If the controller may be damaged, the battery voltage is not measured again. For example, the 12V solar street lamp power supply system, if the battery voltage is lower than 10.8V, the battery has no power and needs to be replaced. Then check whether there is voltage and current output under the normal working condition of the folding battery board.

No rigid battery board is damaged. Replace the battery board. All of the above are OK. You should check the light source and only connect the power supply to the light source to see if it is on. If it is not, replace the light source.

The working principle of the 15W solar street light system is simple. It is a solar panel made by the principle of the photovoltaic effect. During the day, the solar panel receives solar radiation energy and converts it into electrical energy. It is stored in the battery through the charge-discharge controller. At night, when the illuminance gradually reduces to the set value, the sunflower solar panel has an open circuit voltage of about 4.5V, and the charge-discharge controller automatically When this voltage value is detected, a braking command is issued and the battery begins to discharge the lamp head.