Correct Charging Techniques for 18650 Lithium Batteries.

Correct Charging Techniques for 18650 Lithium Batteries.

The lifespan of lithium batteries is generally 300-500 charging cycles. Assuming a complete discharge provides 1Q of electricity, without considering the decrease in electricity after each charging cycle, lithium batteries can provide or supplement a total of 300Q-500Q of electricity during their lifespan. From this, it can be inferred that if charged with 1/2 each time, it can be charged 600-1000 times; If you charge with 1/3 each time, you can charge 900-1500 times. Similarly, if charged randomly, the number of times is not fixed. In short, no matter how it is charged, the total amount of electricity replenished from 300Q to 500Q is constant. So, we can also understand it this way: the lifespan of lithium batteries is related to the total charging capacity of the battery, and not to the number of charging times. The impact of deep discharge and shallow charge on the lifespan of lithium batteries is not significantly different. So, some MP3 manufacturers advertise that "a certain model of MP3 uses a powerful lithium battery that can be charged more than 1500 times." This is purely deceiving consumers' ignorance.

In fact, shallow discharge and shallow charge are more beneficial for lithium batteries, and deep discharge and deep charge are only necessary when the power module of the product is calibrated for lithium batteries. So, products powered by lithium batteries do not have to be limited to the process, everything is convenient first, can be charged at any time, and there is no need to worry about affecting their lifespan

A. Avoid charging at excessively high temperatures.
If lithium batteries are used in environments above the specified operating temperature of 35 ° C, the battery's charge will continuously decrease, meaning that the battery's power supply time will not be as long as usual. If the device needs to be charged at such a temperature, the damage to the battery will be even greater. Even storing batteries in hot environments will inevitably cause corresponding damage to the quality of the batteries. So, maintaining a suitable operating temperature as much as possible is a good way to extend the lifespan of lithium batteries.

B. Avoid charging at low temperatures.
If lithium batteries are used in low temperature environments, i.e. below 4 ° C, it will also be found that the battery life is reduced, and some phones' original lithium batteries cannot even be charged in low temperature environments. But don't worry too much, this is just a temporary situation. Unlike use in high-temperature environments, once the temperature rises, the molecules in the battery are heated and immediately restore their previous charge.

C. Frequently used.
Life lies in movement. To maximize the efficiency of lithium-ion batteries, it is necessary to use them frequently to keep the electrons inside the battery in a flowing state. If you don't use lithium batteries frequently, please remember to complete a charging cycle and perform a power calibration once a month, that is, deep discharge and deep charge once.