A: solar street lamp controller recovery voltage
We often encounter a customer response, my lamp is normal light a few days before, a few days after the rain, can not work properly, check the normal solar controller indicator, the battery also has 12V voltage, lamp source also bright which directly connected to the battery, what is the problem, replace a controller,then good. Here to understand the solar charging controller has a recovery voltage, the general controller recovery voltage point is 12.5V, only when the battery voltage exceeds the voltage point, the solar street lights can automatically reply
B: LED light drive damage
Common LED lights are through a drive power to achieve the constant current LED lights, but this drive accounts for the total power of the total 10% -20%, such as a theoretical value of 42W LED lights, coupled with the drive Actual power may be around 46-50W. When calculating the battery power and battery capacity, you must add 10% -20% to meet the power consumption caused by the drive. In addition, the addition of a drive lead to a process of failure. So now the solar street light controller usually built a constant current source, which reduces power consumption and reduces the possibility of failure.
C: compensation for line loss
Line loss compensation function is still unable to achieve, but this factor we can not ignore, if the line is too long, the output voltage and input voltage drop increases, this will cause the battery in advance undervoltage protection, so that solar lights can not work properly. All in the installation of solar street lights, in order to reduce the line voltage drop, try not to use too thin cable, cable should not be too long. Minimize the distance between the controller and the battery.
