Solar batteries are the main accessories in solar street lights. At present, there are four types of lead-acid batteries, gel batteries, ternary lithium batteries, and lithium iron phosphate batteries. The four commonly used batteries for solar street lights. Which battery is the best? Let's take a look at the characteristics of these four batteries:
1. Lead-acid batteries: The plates of lead-acid batteries are made of lead and lead oxides, and the electrolyte is an aqueous solution of sulfuric acid. The main advantage of lead-acid batteries is that the voltage is relatively stable and the price is relatively cheap; the disadvantage is that the specific energy is relatively low, so the volume is much larger than ordinary batteries, and the service life of lead-acid batteries is relatively short, generally 300-500 deep cycles. Maintenance is relatively frequent, but because of the price advantage, it is still widely used in the solar street light industry.
2. Gel battery: It is equivalent to the upgraded version of the lead-acid battery. It is maintenance-free and solves the criticism of frequent maintenance of the lead-acid batteries. The colloidal electrolyte replaces the sulfuric acid electrolyte inside, which is effective in power storage, discharge capacity, safety performance, and lifespan. All aspects have been improved, but sometimes even surpassed the ternary lithium battery in terms of price. The gel battery can be used in the temperature range of -40°C to 65°C. The low-temperature performance is relatively good, and it can be used in the northern alpine region. It has good seismic performance and can be used safely under various harsh conditions. The service life is double or even more than that of ordinary lead-acid batteries.
3. Ternary lithium battery: The ternary lithium battery has many advantages, such as high specific energy, small size, fast charging, and high price. Its deep cycle times are about 500-800 times, and its life span is similar to that of gel batteries, and the temperature range for use is -15°C-45°C. However, the ternary lithium battery also has drawbacks. Its internal battery is not stable. If it is a ternary lithium battery produced by an unqualified manufacturer, it may explode during the overcharging processor in a high-temperature environment. .
4. Lithium iron phosphate battery: The lithium iron phosphate battery is a storage battery with many advantages. It has higher specific energy, small size, fast charging, long service life, and good stability, but the price is the highest of all batteries. Its deep cycle charging times are generally 1500-2000 times. A set of lithium iron phosphate batteries can generally be used for 8-10 years under normal use and can be used in an environment of -40℃-70℃. The scope is quite wide.
It can be compared from this that, of course, the use of lithium iron phosphate batteries in solar street lights is the best, but the price is relatively high. Lithium iron phosphate batteries are currently domestically developed energy storage batteries with mature and independent property rights. There are many manufacturers, and the conditions of use and safety protection are also perfect. Therefore, the use of lithium iron phosphate batteries is the best choice. For questions about solar street lights and solar batteries, please feel free to interact with the MANLY Battery message.
