How to choose the batteries for 3.2V and 12V solar street lights?
As a new energy product, solar street lights are gradually being widely used in rural areas. However, there are many types of solar street lights on the market with voltages of 3.2V and 12V, so which voltage of solar street light is better? Let's follow Battsys to learn more about it.
1、 How to choose the voltage of 3.2V and 12V solar street lights
Firstly, let's talk about the advantages of using a 3.2V solar street light system voltage: 3.2V solar street lights are cheaper, and for small household solar lights, using this system voltage is more economical. Disadvantages: Low brightness, low efficiency, high requirements for wire body and LED beads. Due to the fact that the power of solar street lights is at least 20W, it can cause excessive current, rapid damage to the light source, and unstable system. After about two years of use, it often leads to the replacement of lithium batteries and light sources
The second advantage is that the 12V solar street light system has high brightness, a work efficiency about 20% higher than the 3.2V system voltage, stable system, and a longer overall service life. Disadvantage: Of course, the price will be higher than that of 3.2V solar street lights. At present, the voltage on the market mostly belongs to 12V, because it first used colloidal lead-acid batteries and later used
solar street lights lithium batteries. We use 12V in Kazakhstan. 3.2V has just entered the market recently. We focus on keeping lights on 365 days a year. If there are any issues during this period, we will pay two dollars for each failure. According to the difference of system voltage, the traditional solar street lamp can reach about 80W at most (considering the heat dissipation problem, it is recommended to use a power less than 60W).
In summary, the voltage of the 12V solar street light system seems to be better. However, not everything is absolute. We should consider the actual needs and application scenarios of the buyers. For example, household solar lights do not require high brightness and usually use low-power light sources. In terms of economy and practicality, the voltage of the 3.2V solar light system is more cost-effective. If installed on rural roads and the power of solar street lights is usually greater than 30W, it is obviously more reasonable to use a 12V solar street light system voltage.
