Solar batteries are the main accessories in solar street lights. Currently, there are four types of batteries: lead-acid batteries, gel batteries, Li ion lithium batteries, and LiFeP04 lithium batteries. The four types of batteries commonly used in solar street lights. Which battery is the best? Let’s take a look at the characteristics of these four batteries:
1. Lead-acid battery
The plates of lead-acid batteries are composed 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. 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 lamp industry.
2. Gel battery
It is equivalent to an upgraded version of lead-acid battery. It is maintenance-free and solves the frequent criticism of lead-acid battery maintenance. Internally, colloidal electrolyte is used instead of sulfuric acid electrolyte, and the storage capacity, discharge capacity, safety performance and life are improved. , But sometimes even surpass the ternary lithium battery in terms of price. The gel battery can be used in the temperature range of -40 ℃-65 ℃, the low temperature performance is better, and it can be used in the northern cold regions. It has good seismic performance and can be used safely under various harsh conditions. The service life is double or even more than ordinary lead-acid batteries.
3. Li-ion lithium battery
The advantages of Li-ion lithium batteries are many. It has high specific energy, small size, fast charging and high price. The number of deep cycles is about 500-800 times, the life is similar to that of gel batteries, and the temperature range used is -15℃-45℃. However, the ternary lithium battery also has disadvantages, and its battery is not stable inside. If it is a Li-ion lithium battery produced by an unqualified manufacturer, it may happen that it may explode during the overcharge process or in a high temperature environment.
4. LiFeP04 Lithium battery
LiFeP04 Lithium battery is a battery that integrates 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. The number of deep cycle charging is generally 1500-2000 times, a group of lithium iron phosphate batteries under normal use, can generally be used for 8-10 years, can be used in an environment of -40 ℃ -70 ℃, the use of temperature The scope is relatively wide.
1.The charge and discharge times of LiFePO4 Lithium battery is 2000 times, but Li-ion Lithium battery is only 800 times. Lifespan of LiFePO4 is 2.5 times than Li-ion.
2.In hot summer LiFeP04 Lithium battery is stable, but Li-ion Lithium battery is easy on fire.
3. LiFePO4 battery is twice expensive than Li-on lithium battery, and more stable. Lifespan of LiFePO4 10 years, Li-ion battery only 4 years.
It can be concluded from this that the use of LiFeP04 Lithium battery in solar street lights is of course the best, but the price is relatively high. LiFeP04 Lithium battery is a domestically developed energy storage battery with mature and independent independent property rights.
There are many manufacturers, and the use conditions and safety protection are also very well done, so the use of lithium iron phosphate battery is the best choice. Questions about solar street lights and solar batteries are welcome to interact with Belinda or Clodesun.com.