Lithium battery does not have a memory function?

　　Author ：Iflowpower – Portable Power Station Supplier

It should be noted in the use of a lithium battery that the battery is placed in a sleep state, at which time the capacity is below the normal value, the usage time is also shortened. However, the lithium battery is easy to activate, and the battery can be activated as long as it passes through 3-5 normal charge and discharge cycles, and normal capacity is restored. Due to the characteristics of the lithium battery itself, it determines that there is almost no memory effect.

Therefore, the new lithium battery in the user's phone is in the process of activation, there is no special method and device. Not only theory is theory, from my own practice, from the beginning, the standard method is used to charge this "natural activation" mode is the best. For the "activation" problem of lithium batteries, many statements are: charging time must be more than 12 hours, repeated three times to activate the battery.

This "first three-three charging 12 hours more" said that it is obvious to continuing from nickel batteries such as nickel-cadmium and nickel hydrogen. So this kind of saying, it can be said that it is misfinalized. The charging and discharging characteristics of lithium batteries and nickel batteries can be very different, and you can tell you very clearly.

All serious formal technical materials I have reviewed emphasize that they will overcharge and over-discharge will for lithium batteries, especially liquid lithium. The ion battery causes huge damage. Therefore, charging is preferably charged according to standard time and standard method, especially for more than 12 hours of long charging.

Generally, the charging method described in the mobile phone manual is the standard charging method suitable for the mobile phone. In addition, the mobile phone or charger of the lithium battery will automatically stop after the battery is full, and there is no "trickle" charging for the nickel electric charger for 10 hours. That is, if your lithium battery is full, it is also white charging on the charger.

And who we can't guarantee that the characteristics of the charging and discharge protection circuit of the battery will never change and quality, so your battery will be in dangerous edges. This is another reason why us oppose long charging. In addition, after the charge exceeds a certain time, if the charger is charged, if the charger is not removed, the system not only does not stop charging, but also the discharge-charging cycle.

Perhaps the manufacturer of this practice has its own purpose, but it is clear that the life of the battery and mobile / charger is not good. At the same time, long-term charging takes a long time, often needs to be carried out at night, while in my country's power grid, the voltage in many parts is relatively high, and there is a large fluctuation. As mentioned earlier, the lithium battery is very delicate, it is much better than the ability of nickel electricity to resist and discharging, so this also brings additional dangers.

 In addition, another aspect of not ignored is that lithium batteries are also not suitable for over-discharge, and over-discharge is also very disadvantageous to lithium batteries. This will lead to the following problems. 2.

When should I start charging in normal use? In our forum, you can often see this, because the number of charge and discharge is limited, so the electric battery should be charged as much as possible as light as possible. But I found a experimental table for lithium-ion battery charge and discharge cycle, and the data on the loop life is listed below: Cycle life (10% DOD):> 1000 times Cycle life (100% DOD):> 200 times The DOD is an abbreviation for discharge depth. As can be seen from the table, the number of times the number of charge and the discharge depth, the cycle life of 10% DOD is much longer than 100% DOD.

Of course, if it is equivalent to the relative total capacity of actual charging: 10% * 1000 = 100% * 200 = 200, the latter complete charge and discharge is still better, but the previous netizen's saying should be amended: Under normal circumstances, you should reserve the remaining power according to the battery Charging the principle of using it, but if your battery is expected to be in the second day When you can adhere to the whole day, you should start charging in time, of course, if you are willing to carry the charger to the office is also true. And when you need to charge to cope with an important event that is expected to lead to busy communication, even in the battery When there is a lot of balance, then you only charge in advance, because you don't really lose "1" times charging cycle life, It is "0.X" times, and it is often small to be small.

 The principle of battery remaining electricity is not to go to the extreme. A statement that is very popular like long charging, That is, try to use the battery's battery, it is best to use automatic shutdown. " This practice is actually just the practice of nickel battery.

 The purpose is to avoid memory effects, unfortunately it is also circulating it on the lithium battery. I used to have a mobile phone battery After the low warning appears, it is still not charged to continue to use an example of automatic shutdown. Results this example in this example The later charging and no reactions were in the boot, and they had to send customer service overhaul.

This is actually due to the battery due to excessive discharge. The voltage is too low, so that there is no normal charging and power-on conditions. 3, the correct practice of lithium battery mobile phones Attributing, my most important tips for the charge and discharge problem in the use of lithium batteries are: 1.

Charging according to the standard time and program, even the top three times; 2, when there is a low tip of the phone, you should start charging in time; 3, the activation of lithium batteries does not require a special method, and the lithium battery will naturally be activated in the normal use of the phone. If you insist on the "first three-time 12-hour long charging activation" method, it will not have effects. Therefore, all the practices that pursue 12 hours of long charging and use lithium battery mobile phones to automatically shut down are erroneous.

If you used to do it according to the wrong statement, please correct it in time, maybe it is not too late. Of course, in the case where the mobile phone and the charger itself protects and controls the quality of the circuit, it is quite guaranteed. Therefore, the understanding of the charging rules is the focus, and in some cases it can make some concessions.

For example, if you find that the phone must be charged before you sleep at night, you can also start charging before going to bed. The key to the problem is that you should know what the correct approach is, and don't deliberately do it according to the wrong statement. .