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Showing posts from June, 2021

How to charge and discharge the newly purchased lithium battery?

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Many people are elusive about newly-purchased lithium batteries. The author summarized 10 tips on how to use lithium batteries, and share them with you, hoping to help. 1. How to use the newly purchased lithium battery? Should it be charged or discharged first? How to charge and discharge? In fact, most of the current lithium batteries are polymer lithium batteries , and there is no such thing as how long the battery needs to be recharged for activation as the previous lithium battery manufacturers said. After we buy it back, it can be used normally. First discharge with a small current (usually set to 1-2A), and then use 1A current for charge and discharge cycles for 2-3 times. 2. The new battery has just started to use, the voltage is unbalanced, and after charging and discharging several times, it is normal again. What is the problem? The main reason is that although the individual cells in the battery pack are well-matched, there are still individual differences in ...

How to pay attention to fire prevention when using lithium ion batteries?

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Lithium-ion batteries are divided into two categories: non-rechargeable batteries and rechargeable batteries. Non-rechargeable batteries are called disposable batteries. Disposable batteries can only convert chemical energy into electrical energy, but cannot restore electrical energy to chemical energy (or have poor reduction performance). Rechargeable batteries are called secondary batteries. It can convert electrical energy into chemical energy and store it. When used, the conversion of chemical energy into electrical energy is reversible, which is an important feature of electrochemical lithium-ion batteries. Pay attention to fire prevention while using lithium-ion batteries. Many people may become familiar with lithium-ion batteries from their mobile phones. In fact, it is used in many household appliances. There is no doubt that lithium-ion batteries are being used rapidly due to their high efficiency and lightness. However, if the lithium battery is used accidenta...

How to solve the bulging problem of lithium-ion batteries?

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  There may be two basic reasons for the expansion of lithium-ion batteries. The first reason is the level of production technology of polymer lithium-ion batteries: the metal electrode coating is not uniform and the processing technology is relatively rough. Another reason may be the problem of overcharging and overdischarging. Li-ion battery bulge reasons: 1. Bulge caused by overcharge Overcharging will cause all the lithium atoms in the positive electrode material to run into the negative electrode material, causing the originally full grid of the positive electrode to deform and collapse, which is also an important reason for the decline in the power of the lithium-ion battery. In this process, there are more and more lithium ions in the negative electrode, and the excessive accumulation makes the lithium atoms grow out of the tree stump crystals, which makes the lithium ion battery swell. 2. Bulge caused by over discharge During the first charge and discharge ...

UFX 802050 3.7V 800mAh Battery for Sweeping Robots With UL1642 and KC Certification

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How to charge the lithium iron phosphate battery correctly?

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The full name of lithium iron phosphate battery is lithium iron phosphate lithium ion battery. Because its performance is particularly suitable for power applications, the word "power" is added to the name, that is, lithium iron phosphate power battery. And do you all know the charging skills of lithium iron phosphate? The following will introduce you to the charging skills of lithium iron phosphate batteries. 1. First of all, we need to understand the structure and working principle of lithium iron phosphate batteries . LiFePO4 is used as the positive electrode of the battery. It is connected to the positive electrode of the battery by aluminum foil. In the middle is a polymer separator, which separates the positive electrode from the negative electrode, but lithium ions can pass through and electrons cannot pass. On the right is the negative electrode of the battery composed of carbon (graphite), which is connected to the negative electrode of the battery by...

How to deal with the deterioration of lithium battery performance in low temperature environment?

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The use of lithium batteries is restricted in low temperature environments. Except for the severe deterioration of discharge capacity, lithium batteries cannot be charged at low temperatures. During low-temperature charging, the intercalation of lithium ions on the graphite electrode of the battery and the lithium plating reaction coexist and compete with each other. Under low temperature conditions, the diffusion of lithium ions in graphite is inhibited, and the conductivity of the electrolyte decreases, resulting in a decrease in the intercalation rate and the lithium plating reaction on the graphite surface is more likely to occur. The main reasons for the decrease in the life of lithium-ion batteries when used at low temperatures are the increase in internal impedance and the degradation of the capacity due to the precipitation of lithium ions. 1. The influence of low temperature on battery discharge capacity Capacity is one of the most important parameters of a lithi...