Record the total number of lithium battery charging and discharging times

Introduction Record the total number of lithium battery charging and discharging times. The average number of charge and discharge times is 500. The lifespan of a lithium battery is 500 charge cycles. For example: a lithium battery was only used half the time on the f

Record the total number of lithium battery charging and discharging times

The average number of charge and discharge times is 500. The lifespan of a lithium battery is 500 charge cycles. For example: a lithium battery only uses half its power on the first day and then fully charges. If it is still the same the next day, that is, charge it after half use, and after a total of 1 charge, it can only be counted as one charging cycle. The battery capacity will be reduced a little, but the power reduction is very small. If the battery is of good quality and high quality, the battery will still retain 80% of its original capacity after several cycles. be used after two or three years of normal use. But then again, products ultimately have a lifespan and lithium batteries also need to be replaced. The so-called 500 times means that the manufacturer has achieved 625 recharges at a constant depth of discharge of 80%, achievinglasting 500 charge cycles. Another calculation will make it clearer: 625×80%=500 (ignoring factors such as the reduction in lithium battery capacity). In practice, due to various life influences, including the depth of discharge during charging is not constant.

The lithium battery in electric vehicles is best charged when there is about 20% remaining. Do not fully charge it after using it. You can recharge it when there is about 20% left. do not charge it completely. Above 80 is almost enough.

The lifespan of lithium batteries is limited, that is, the number of times they can be charged is limited. Lithium batteries can generally be charged and discharged about 500 times. Do not start charging until they are completely empty. , and you also don't charge it until it's fully charged at 100%. The lifespan of lithium battery is about 500 charges and discharges, which does not refer to the number of charges, but the number of charge and discharge cycles.

To put it simply, you start charging when there is 50% left after the first use. After charging, you always start charging with 50% remaining. This can only be counted as one charge and discharge cycle (this explanation is of course not valid. This means that it can be used indefinitely if not used every time. We can only say that the cycle is extended and the duration of use is longer).

Detailed information:

Battery life

I believe that most Some consumers have heard that the lifespan of a lithium battery is “500 times longer”. To prolong battery life, it is only charged whenThe battery is completely exhausted. Does it really extend battery life? the answer is negative. The lifespan of a lithium battery is "500 times", which does not refer to the number of charges, but to one cycle of charging and discharging.

A charge cycle means that all of the battery's energy is used from full to empty, then charged from empty to full. This is not the same as a single charge. For example, a lithium battery only uses half its power the first day, then it is fully charged. If it is still the same the next day, i.e. if you charge it half and charge it twice in total, this can only be counted as one charging cycle and not two.

Therefore, multiple charges may typically be required to complete a cycle. Each time a charge cycle is completed, the battery capacity decreases a little. However, this redPower uction isThe degree is very low. High quality batteries will still retain 80% of their original capacity after being charged several times. Many lithium-ion powered products are still in use after two or three years. Of course, lithium batteries still need to be replaced once their lifespan is reached.

The so-called 500 times means that the manufacturer has achieved approximately 625 times of charging at a constant discharge depth (e.g. 80%), reaching 500 charge cycles.

(80%*625=500) (ignoring factors such as lithium battery capacity reduction)

Due to various influences in real life, especially the depth of discharge during charging is not constant, so "500 charging cycles" can only be used as a reference for battery life.

Reference documents:

Lithium battery - EncyBaidu clopedia

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