With the demand of social development, the market share of lithium-ion batteries has increased rapidly, and lithium-ion batteries have developed rapidly. According to relevant data, the lithium-ion battery market is expected to reach 500 billion yuan in 2022. So, with more and more people using lithium batteries, there will also be some concerns and hidden dangers. At present, lithium-ion battery technology is relatively mature. Using lithium batteries correctly and charging and discharging them can not only ensure the battery's service life but also avoid safety hazards.

　　For the issue of how to charge lithium batteries, we know that lithium battery charging requires the use of a matching charger. In the industrial supporting market, as each product is also separately packaged and not interchangeable, it is necessary to choose the corresponding charger based on the lithium battery pack used and strictly charge according to the requirements. Whether in the industrial or civilian market, the basic principles of how to charge lithium-ion batteries are consistent, so the steps and standards for charging lithium-ion batteries can be standardized. Generally, the nominal voltage of lithium-ion batteries is 3.7V and the charging voltage is 4.2V. Let's take a 2000mAh battery as an example to illustrate the correct charging method for lithium batteries.

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