At present, there are two kinds of solar battery charge controllers in the market, boost controller and buck controller.
First of all, we need to know how to choose the boost and step-down solar battery charge controller when purchasing. Because the arrangement of light source beads is different, so the voltage of the lamp head is different. The solar battery voltage is a fixed value 12V. Then the boost solar battery charge controller is used for the light source whose voltage is higher than 12V, and the buck solar battery charge controller is used for the light source whose voltage is lower than 12V, only by this can solar light normally using be promised.
The boost solar battery charge controller can raise the voltage of the battery to the working voltage of the LED lamp so that LED light can work properly.
The main advantages are as follows: firstly, the efficiency is over 90%; secondly, when the solar battery charge controller fails, it will not affect the solar street lamp, because the output voltage is only 12V, so the solar street lamp will not turn on; thirdly, Suitable for 5-15 series lamp sources; fourthly, it can work in multiple time periods, more intelligent. The disadvantage is that the price of the boost solar battery charge controller is higher than that of the buck solar battery charge controller.
The buck solar battery charge controller can reduce the voltage of the battery to the working voltage of the LED lamp, and make the LED lamp work normally. The advantage is that the price is relatively cheap. There are two main shortcomings: first, Only suitable for 3 (9V) or 7 (21V) series light sources; second, the solar battery charge controller may damage the lamp holder and storage battery when it fails.
