18650 rechargeable battery lithium 3.7v 3500mah
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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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The use of lithium-ion batteries.cr2032 button battery

release time:2024-03-26 Hits:     Popular:AG11 battery

  The use of lithium-ion batteries

  In the use of lithium batteries, it should be noted that after the battery is placed for a period of time, it enters a dormant state, at this time the capacity is lower than normal, and the use time is also shortened. However, lithium batteries are easy to activate, as long as 3-5 normal charge and discharge cycles can be activated to restore normal capacity. Due to the characteristics of the lithium battery itself, it has almost no memory effect. Therefore, the new lithium battery in the user's mobile phone does not require special methods and equipment during the activation process. Not only is this true in theory, but in my own practice, the "natural activation" method of charging from the beginning is the best.

  For the "activation" problem of lithium batteries, many say that the charging time must be more than 12 hours, and it must be repeated three times in order to activate the battery. This statement that "the first three charges should be charged for more than 12 hours" is obviously a continuation of the statement from nickel batteries (such as nickel cadmium and nickel metal hydride). So it's a misrepresentation to begin with. There is a very big difference between the charge and discharge characteristics of lithium batteries and nickel batteries, and it can be very clear to tell you that all the serious formal technical information I have consulted emphasizes that overcharge and overdischarge will cause great harm 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 for more than 12 hours. Usually, the charging method described in the mobile phone manual is the standard charging method suitable for the mobile phone. + ^' S' h, D7 E. a7 ~. c7 G

  In addition, lithium battery mobile phones or chargers will automatically stop charging after the battery is full, and there is no so-called "trickle" charging of nickel electric chargers that lasts for more than 10 hours. That is to say, if your lithium battery is full, it is also empty on the charger. And none of us can guarantee that the characteristics of the battery's charge and discharge protection circuit will never change and the quality of the foolproof, so your battery will be on the edge of danger for a long time. This is another reason why we oppose long charging.

  In addition, on some mobile phones, after charging for more than a certain period of time, if you do not remove the charger, then the system not only does not stop charging, but also starts the discharge-charging cycle. Perhaps the manufacturer of this practice has its own purpose, but it is obviously detrimental to the life of the battery and the phone/charger. At the same time, long charging takes a long time, often need to be carried out at night, and to the situation of China's power grid, the voltage at night in many places is relatively high, and the fluctuation is large. As has been said before, lithium batteries are very delicate, and it is much less resistant to fluctuations in charge and discharge than nickel electricity, so this brings additional dangers. : z2 t8 U# f3 N! v

  In addition, another aspect that cannot be ignored is that lithium batteries are also not suitable for over-discharge, and over-discharge is also very unfavorable to lithium batteries. This leads to the following question.


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