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When should charging start during normal use

Because the frequency of charging and discharging is limited, the lithium battery should be recharged by using up as much electricity as possible. But I found an experimental table about the charging and discharging cycles of lithium-ion batteries, and the data on cycle life is listed as follows:

Cycle life (10% DOD):>1000 cycles

Cycle life (100% DOD):>200 cycles

DOD is the English abbreviation for discharge depth. From the table, it can be seen that the number of rechargeable times is related to the depth of discharge, and the cycle life at 10% DOD is much longer than that at 100% DOD. Of course, if we take into account the actual total charging capacity: 10% * 1000=100100% * 200=200, the latter's complete charging and discharging is still better. However, the previous statement from netizens needs to be corrected: under normal circumstances, you should charge your battery according to the principle of using up the remaining battery before charging. However, if your battery is expected to last for the entire day on the second day, you should start charging in a timely manner. Of course, if you are willing to carry a charger to the office, that's another matter..

And when you need to charge to cope with important events that are expected to cause busy communication, even when there is still a lot of remaining battery power, you just need to charge in advance because you have not really lost one charging cycle life, which is only 0. x times, and often this x will be very small.

The principle of using up the remaining battery power before recharging is not to take you to extremes. A widely circulated saying, similar to long-term charging, is to try to use up the battery of the machine as much as possible, and it is best to use automatic shutdown. This approach is actually just a practice on nickel batteries, aimed at avoiding memory effects. Unfortunately, it has also been passed down on lithium batteries to this day. There was once an example of someone using automatic shutdown despite not charging due to the warning of low battery level on the machine. As a result, the machine in this example showed no response during subsequent charging and startup, and had to be sent to customer service for maintenance. This is actually caused by excessive discharge of the battery, resulting in a low voltage that does not meet normal charging and startup conditions.

Correct practices for lithium batteries

In summary, the most important reminder for the charging and discharging issues of lithium batteries during use is:

1. Charge according to standard time and procedure, even for the first three times;

2. When there is a low battery prompt, it is advisable to start charging as soon as possible;

3. The activation of lithium batteries does not require a special method, and lithium batteries will naturally activate during normal machine use. If you insist on using the popular 12 hour long charging activation method for the first three times, it will not actually be effective.

Therefore, all practices that pursue 12 hour ultra long charging and use lithium batteries for automatic shutdown are wrong. If you have followed the wrong statement before, please correct it in a timely manner, perhaps it is not too late.

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