In the use of lithium batteries, it should be noted that after the battery is placed for a period of time, it enters a sleep state. At this time, the capacity is lower than the normal value, and the use time is also shortened. However, the lithium battery is easy to activate, as long as the battery is activated after 3-5 normal charge and discharge cycles, the normal capacity is restored. Due to the characteristics of the lithium battery itself, it is determined that 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 in theory, but from my own practice, it is best to use a standard method of charging this "natural activation" method from the beginning.
At the same time, long charging takes a long time and often needs to be carried out at night. In the case of China's power grid, the voltage at night is high in many places and fluctuates greatly. As mentioned earlier, lithium batteries are very delicate, and they are much less resistant to fluctuations in charge and discharge than nickel, which in turn poses additional risks.
In addition, another aspect that cannot be ignored is that lithium batteries are also not suitable for over-discharge, and over-discharge is also disadvantageous for lithium batteries.
Tools/raw material lithium battery, nickel metal hydride battery, lithium battery charger, nickel metal hydride battery charger steps/methods When to start charging in normal use, this statement can often be seen on the forum, because the number of charge and discharge is limited, Therefore, the battery should be recharged as much as possible. But I found an experimental table on the charge and discharge cycle of lithium-ion batteries. The data on cycle life are listed below:
Cycle life (10% DOD): >1000 cycles Cycle life (100% DOD): >200 times DOD is the abbreviation for depth of discharge. As can be seen from the table, the number of chargeables is related to the depth of discharge, and the cycle life at 10% DOD is much longer than that of 100% DOD. Of course, if you convert to the relative total capacity of the actual charge: 10% * 1000 = 100, 100% * 200 = 200, the latter's full charge and discharge is still better, but the former netizen's statement to do some correction: in normal In this case, you should reserve the charge according to the principle that the remaining battery power is used up and recharge, but if your battery is not likely to last for two hours on the second day, you should start charging in time. Of course, if you are willing Carrying the charger to the office is another matter.
You need to charge to cope with the expected inconvenience or the condition is not allowed to charge, even if the battery still has a lot of power, then you only charge in advance, because you did not really lose "1" charge cycle life, that is, " 0.x" only, and often this x will be small.
The principle of recharging the remaining battery power is not to go to extremes. One of the more widely spread arguments like long charging is that "try to run out of battery power, it is best to use automatic shutdown." This practice is actually only a nickel battery, the purpose is to avoid the memory effect, unfortunately it is also circulating on the lithium battery. The battery is too low due to excessive discharge, so that it does not have normal charging and power-on conditions.
The correct way to charge lithium batteries To sum up, my most important tips on the charge and discharge problems of lithium batteries in use are:
1. Charge according to standard time and procedures, even if it is the first three times;
2. When the power is too low, you should start charging as soon as possible;
3. The activation of the lithium battery does not require a special method, and the lithium battery will naturally activate during normal use. If you insist on using the "first three 12-hour long charge activation" method, it will not actually work.
Therefore, all the pursuit of 12 to 16 hours of ultra-long charging and the use of lithium batteries to automatically shut down is wrong. If you have done it in the wrong way, please correct it in time, maybe it is not too late.
Precautions When the original charger's own protection and control circuit is of good quality, the protection of the lithium battery is quite guaranteed. So the understanding of the charging rules is the focus, and in some cases it is also possible to make some concessions. For example, if you think the battery must be charged before you go to sleep at night, you can also start charging before going to bed. The point is that you should know what the right approach is and don't deliberately follow the wrong way.
At the same time, long charging takes a long time and often needs to be carried out at night. In the case of China's power grid, the voltage at night is high in many places and fluctuates greatly. As mentioned earlier, lithium batteries are very delicate, and they are much less resistant to fluctuations in charge and discharge than nickel, which in turn poses additional risks.
In addition, another aspect that cannot be ignored is that lithium batteries are also not suitable for over-discharge, and over-discharge is also disadvantageous for lithium batteries.
Tools/raw material lithium battery, nickel metal hydride battery, lithium battery charger, nickel metal hydride battery charger steps/methods When to start charging in normal use, this statement can often be seen on the forum, because the number of charge and discharge is limited, Therefore, the battery should be recharged as much as possible. But I found an experimental table on the charge and discharge cycle of lithium-ion batteries. The data on cycle life are listed below:
Cycle life (10% DOD): >1000 cycles Cycle life (100% DOD): >200 times DOD is the abbreviation for depth of discharge. As can be seen from the table, the number of chargeables is related to the depth of discharge, and the cycle life at 10% DOD is much longer than that of 100% DOD. Of course, if you convert to the relative total capacity of the actual charge: 10% * 1000 = 100, 100% * 200 = 200, the latter's full charge and discharge is still better, but the former netizen's statement to do some correction: in normal In this case, you should reserve the charge according to the principle that the remaining battery power is used up and recharge, but if your battery is not likely to last for two hours on the second day, you should start charging in time. Of course, if you are willing Carrying the charger to the office is another matter.
You need to charge to cope with the expected inconvenience or the condition is not allowed to charge, even if the battery still has a lot of power, then you only charge in advance, because you did not really lose "1" charge cycle life, that is, " 0.x" only, and often this x will be small.
The principle of recharging the remaining battery power is not to go to extremes. One of the more widely spread arguments like long charging is that "try to run out of battery power, it is best to use automatic shutdown." This practice is actually only a nickel battery, the purpose is to avoid the memory effect, unfortunately it is also circulating on the lithium battery. The battery is too low due to excessive discharge, so that it does not have normal charging and power-on conditions.
The correct way to charge lithium batteries To sum up, my most important tips on the charge and discharge problems of lithium batteries in use are:
1. Charge according to standard time and procedures, even if it is the first three times;
2. When the power is too low, you should start charging as soon as possible;
3. The activation of the lithium battery does not require a special method, and the lithium battery will naturally activate during normal use. If you insist on using the "first three 12-hour long charge activation" method, it will not actually work.
Therefore, all the pursuit of 12 to 16 hours of ultra-long charging and the use of lithium batteries to automatically shut down is wrong. If you have done it in the wrong way, please correct it in time, maybe it is not too late.
Precautions When the original charger's own protection and control circuit is of good quality, the protection of the lithium battery is quite guaranteed. So the understanding of the charging rules is the focus, and in some cases it is also possible to make some concessions. For example, if you think the battery must be charged before you go to sleep at night, you can also start charging before going to bed. The point is that you should know what the right approach is and don't deliberately follow the wrong way.
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