[Makita's 18V battery life] How many times is it charged and discharged? Is overcharging not good?

[18v 6.0Ah Makita battery] How many times is the Makita battery charged and discharged? Is overcharging not good? When purchasing and using a Makita 18V 6.0Ah battery, there are many things you need to know in advance, such as how long it will last and how many times it can be charged or discharged. Even if you normally use a lithium-ion battery, many of you may not be familiar with the details such as lifespan, number of charges and number of discharges. Here, we will introduce the basic knowledge about life and the number of times of charging and discharging as what you need to know when purchasing a 6.0Ah Makita battery.

How many times can a MAKITA 18V lithium-ion battery be charged?

I am concerned about how long 18V Makita's lithium-ion battery will last and how many times it will be charged when using it. In order to use the battery without loss, it is best to know the limit of the number of times it can be charged. It is generally said that lithium-ion batteries can be used without problems even if they are charged about 500 times. In other words, even if a person who uses it a lot uses it every day to charge it, if you look only at this number of times, you can see that the lithium-ion battery will last for more than a year.

What is the life of a lithium-ion battery for Makita18V ?

The concern here, however, is battery life. In fact, even if you charge it 500 times or more, the battery won't be damaged, so not 500 charges = battery life. In reality, power consumption, capacity, frequency, etc. will also shorten the service life. So, as a conclusion, even a battery that claims to be able to charge 500 times may reach the end of its life after less than 500 times, depending on how it is used, and it may still be fully usable even after 500 charges. For example, heavy use such as "daily use and repeated charging" as described above is expected to accelerate deterioration. This is a mechanism by which battery life gradually deteriorates and becomes unusable.

About the number of times the lithium-ion battery is charged and discharged

In fact, how do you count the number of times a lithium-ion battery is charged and discharged? First of all, regarding the charge count, "when fully charged with the battery remaining at 0%" is set to once. Therefore, if you use about half and charge half, it will be counted as 0.5 times. This idea is of course the same for discharge. As shown above, it is common to think of the state where the battery level is 0% as one discharge.

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