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The correct use and maintenance of lithium batteries

by:dcfpower     2021-03-19
1. In the use of lithium batteries, it should be noted that after the battery is left for a period of time, it will enter the dormant state. At this time, the capacity is lower than the normal value, and the use time is also shortened. But the lithium battery pack is easy to activate, as long as 3-5 normal charge and discharge cycles can activate the electricity and restore the normal capacity. Due to the characteristics of the lithium battery pack itself, it is determined that it has almost no memory effect. Overcharge and overdischarge can cause great damage to lithium batteries, especially liquid lithium ion batteries. Therefore, it is best to charge according to the standard time and standard method, especially not to charge more than 12 hours. 2. The principle of recharging after the remaining battery power is used up is the practice of nickel batteries, the purpose is to avoid the memory effect, but this is also said when buying mobile phones and laptops. There was an example where someone continued to use it until it was automatically shut down because of a warning that the laptop battery was too low. As a result, the laptop in this example did not respond during subsequent charging and startup, and had to be sent to customer service for repair. This is actually caused by the low voltage of the battery due to over-discharge, so that it does not have normal charging and starting conditions. Do not charge the lithium battery pack too full and do not use it until it is dead. Charge the battery before it is used up, and it will not cause damage to the battery. Charging should be within 2-3 hours, not necessarily full. But every 3-4 months or so, the lithium battery should be fully charged 1-2 times (normal charging time) and discharged. Lithium-ion batteries can be stored for more than half a year at 20°C because of their low self-discharge rate and most of the capacity can be recovered. In short, the lithium battery pack shall not be higher than the maximum charging voltage when charging, and shall not be lower than the minimum working voltage when discharging. Lithium-ion batteries must be kept above the minimum operating voltage at any time. Over-discharge or self-discharge reactions at low voltages will cause decomposition and destruction of lithium-ion active materials, which may not necessarily be reduced. Any form of overcharging of lithium-ion batteries will cause serious damage to battery performance and even explosion. Li-ion batteries must avoid overcharging the battery during the charging process. Do not often deep discharge and deep charge. However, after about 30 charging cycles, the power detection chip will automatically perform a deep discharge and deep charge to accurately assess the battery's status. Avoid high temperature, which may shorten the life span, or cause an explosion in severe cases. Store in the refrigerator if possible. If the notebook computer is using AC power, please unplug the lithium battery pack bar to avoid the heat generated by the computer. Avoid freezing, but the freezing point of most lithium battery pack electrolyte solutions is -40°C, which is not easy to freeze. If you do not use it for a long time, please store it with a charge of 40% to 60%. When the battery is too low, it may be overdischarged due to self-discharge. Since lithium-ion batteries will naturally age when they are not in use, they should be purchased according to the actual amount needed when purchasing, and should not be purchased too much. The author hopes that through the above introduction, everyone has a correct use and maintenance of lithium batteries. u003c/pu003e
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