How to assess a power battery's performance?

How to assess a power battery's performance?

The materials for lithium have many. Like nickel cobalt manganese, nickel cobalt aluminum, lithium iron phosphate and etc. Based on their primary applications, the following six materials are separated into four groups: cathode material, anode material, diaphragm, and electrolyte. ‍‍The cost of the cathode material might exceed 30% in the latter two of these, which are the well-known ternary li-ion batteries. According to insiders in the industry, energy storage density and safety are the two main performance indicators for power batteries. As a result, lithium titanate, lithium manganate, and lithium cobaltate batteries have been abandoned due to their poor energy storage density and safety, respectively. This leaves only lithium iron phosphate and tin oxide batteries.

The comparison between LiFePO4 and ternary lithium batteries

We can’t really tell if LiFePO4 or ternary lithium batteries are good or terrible because they each have their own advantages and disadvantages. One battery that excels in both energy density and low-temperature resistance is the ternary lithium battery.

Due to their high voltage, ternary lithium batteries offer a higher energy density than LiFePO4—more than 1.7 times better. Many manufacturers are still concentrating on producing NCM batteries, which are currently segmented into different varieties based on the ternary material ratio, despite the enhanced performance of NCM and NCA batteries.‍This is because NCM batteries have a lower thermal flee temperature, strict production process, rising costs, and technology that is controlled by Japanese and Korean companies.

The second trait

The second trait is low temperature resistance. A LiFePO4 battery can operate at a maximum temperature of -20 °C, which is preferable to a ternary lithium battery’s maximum operating temperature of -30 °C. Let’s assuming that under the same low temperature conditions, the winter attenuation of the ternary battery is less than 15%, significantly higher than the attenuation of up to 30%. In this circumstance, it will be more appropriate for the northern market generally. As a result, BYD does well in the south while having trouble recruiting customers in the north. ‍‍

Generally speaking, ternary lithium batteries are appropriate from a use perspective for situations requiring a high energy density, a small amount of space, and high customer experience standards, such as mid- to high-end passenger cars, whereas lifepo4 is appropriate for large spaces and large installations.

LiFePO4 has advantages in three other areas, though.

First, LiFePO4 batteries are more secure. There is a slight probability that these conditions will cause LiFePO4 to instantly burn since the thermal runaway temperature that causes Lithium iron phosphate batteries to underperform is typically above five hundred degrees, while ternary lithium batteries are just under three hundred degrees, as well as a few high nickel batteries are even lower than two hundred degrees. 

Second, LiFePO4 batteries have far longer life spans. It’s no more a news that the LiFePO4 lifespan can have a more than 10 years. Before it starts to deteriorate, it can be charged and discharged in more than 3,000 times. In comparison, ternary lithium batteries have a service life of only three years and may only be charged and drained 1000 times. Their lifespans varied greatly from one another in this way.


Normally, LiFePO4 batteries are also not that expensive to manufacture. LiFePO4 batteries have significantly cheaper production costs because they don’t include any precious metals. Ternary lithium batteries need cobalt metal, which has 70% of its resources in Africa, which has raised the price of imports, compared to electrolytic nickel, which costs just 110,000 yuan/ton.

This is one of the main reasons that battery companies are compelled to use LiFePO4 lithium iron phosphate.

An excellent option for the solar lighting business is the LiFePo4 battery.

Despite their greater initial cost, LiFePO4 battery systems offer a better cost of ownership in a few circumstances, particularly those involving hot temperatures, where there is currently no one solution that is superior to another for all circumstances. The LiFePO4 battery has long been the industry’s top pick for solar street lighting due to its many benefits, including safer operation, a much longer lifespan, lighter weight, environmental friendliness, and quick charging, among others. It helps solar lights last longer, operate more safely, and, most importantly, be more kind to the environment.

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