A text teaches you how to correctly identify the capacity and power of the battery

With the wide application of lithium batteries in digital products, more and more domestic manufacturers have begun to provide compatible battery solutions for various world famous digital products. But in such a huge market, there are always a lot of unscrupulous businessmen who are trying to fish in troubled waters. The purpose is to deceive most consumers who do not understand lithium batteries at all.

So how can we find a product that meets the specifications in such many lithium batteries? We only have to arm our own brains!

Today, we have a class about lithium batteries for everyone. I hope that after learning, I will be able to arm my own brains and buy a lithium battery product with regular, safe and endurance capabilities. From this, we will also learn the maintenance skills of lithium batteries. Do not use electricity to recharge!

First, how can we correctly identify the battery capacity and power?

Below, we use the lithium battery for PSP as an example:

Through the above PPT, we can know that the power of the battery is the standard for measuring the actual battery life. The simple MAH unit (power unit) simply cannot explain the problem. However, the average businessman and even the media are accustomed to use the data of the mAh power unit as a description of the basic characteristics of the battery, which leads to confusion in understanding the difference between the battery power and the actual battery life.

Second, how to identify the lithium battery products with virtual standard capacity

Below, we continue to use the lithium battery under the PSP as an example to illustrate. The PSP original battery uses a lithium polymer battery (LI-POLYMER), which is thinner than the common batteries in the industry. As for today, the lithium polymer battery we mentioned is actually a kind of lithium battery, and there are older lithium-ion batteries. In comparison, the advantages of lithium polymer batteries are as follows:

1. Replacing the liquid electrolyte with a solid electrolyte. Compared with the liquid lithium ion battery, the polymer lithium ion battery has the advantages of being thinner, arbitrarily aread and arbitrarily shaped, and does not cause leakage, combustion and explosion. The problem is that the battery casing can be made of an aluminum-plastic composite film, so that the specific capacity of the entire battery can be improved;

2. Polymer lithium-ion batteries can also use polymers as cathode materials, and their mass ratio energy will be increased by more than 50% compared with current liquid lithium-ion batteries.

3, polymer lithium-ion battery in the working voltage, charge and discharge cycle life and other aspects than the lithium-ion battery has improved.

Let's take a look at the battery common sense in the industry:

There is also a cylindrical lithium battery (numbered 18650 battery, 8mm diameter, 650mm length, working voltage 3,7V), the highest capacitance is 2400mAh (generally 1800 ~ 2200mAh), both are common Lithium battery, but 18650 batteries are often used in laptops, so I won't explain them in detail here. 18650 lithium battery, 3, 7V, 1800 ~ 2400mAh

Third, what is the correct lithium battery charging habit?

Regarding the charging habits of lithium batteries, Google or Baidu may find two answers. One is to use up and recharge as much as possible, and the other is of course to be charged. So which of these two answers is correct? Some common sense we have to understand first.

The user's charging habit of lithium battery depends on the memory effect of the battery. Before the development of lithium batteries, rechargeable batteries made of nickel-zinc, nickel-cadmium, nickel-hydrogen and other raw materials have a strong memory effect. If the battery is recharged for a long time with a large amount of remaining power, the battery can be stored. The amount of electricity is getting less and less. However, after the introduction of lithium batteries, the memory effect is greatly reduced, and experts generally use such words to ignore them.

Although it can be ignored, the number of rechargeable lithium batteries is also limited, generally ranging from 500 to 1000 times. Therefore, maintenance is a key factor in the life of lithium batteries. Based on the characteristics of lithium batteries, we attribute the maintenance skills to the following:

1. Do not let the lithium battery charge less than 3% (it is recommended to start charging below 20%)

2. When the lithium battery is 1%, it can become a deep discharge, and deep discharge must be avoided. Because deep discharge directly affects the service life of lithium batteries.

3. Long-term (more than 3 months) do not use lithium battery, should be charged to 50% of the power to save.

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