Usage of lithium battery

Lithium batteries are durable goods and do not need to be equipped with expensive original seat batteries. Generally, branded ordinary seat batteries can be used, with a price of 15-20 yuan, eliminating the need to rely on mobile phones for direct charging. Seat charging can be divided into fast charging (about 2-3 hours) and slow charging (about 10 hours). If there are many batteries, it is better to choose fast charging.
In addition, due to the characteristics of lithium batteries, there is no need for discharging and overcharging operations. The life of a battery depends entirely on the effective charging time. In other words, even if you start charging in half, it doesn't affect battery life.
1. Recognizing the Memory Effect
Battery memory effect refers to the reversible failure of a battery, i.e. the performance that can be restored after the battery fails. Memory effect refers to the tendency of a battery to automatically maintain a specific operating cycle after a long period of time. This was first defined in nickel cadmium batteries, where nickel cadmium bag batteries do not have a memory effect, while sintered batteries have a memory effect. Nickel metal hydrogen (commonly known as nickel hydrogen) batteries are not subject to this definition of memory effect.
Recommendation 1: It is unnecessary and harmful to discharge the battery before each charge, as the battery's service life is unnecessarily shortened. Recommendation 2: It is not advisable to use a resistor to connect the positive and negative electrodes of the battery for discharging. The current cannot be controlled, which can easily exceed 0V, and even cause the polarity of the battery in series to reverse.
2. Battery needs to be activated
Before leaving the factory, lithium ion batteries undergo the following process: filling the lithium ion battery shell with electrolyte - sealing - formation, which is constant voltage charging, and then discharging. After several cycles, the electrodes are fully soaked in the electrolyte, fully activated, and until the capacity meets the requirements. This is the activation process - capacitance division, which is to test the capacity of the battery, select batteries with different performance (capacity), and classify them into different levels, Perform capacity matching, etc. The resulting lithium ion battery is already activated on the user's hand.
The time it takes for batteries delivered from a battery factory to reach users can sometimes be very long, ranging from 1 month to half a year. At this time, because the battery electrode material can be passivated, the manufacturer recommends that batteries used for the first time be fully charged and discharged for 3-5 times in order to eliminate the passivation of the electrode material and achieve maximum capacity.
3. No need to charge for 12 hours for the first three times
Due to the need for supplemental and trickle charging processes in early mobile phone NiMH batteries, it may take around 5 hours to reach a fully charged state, but it also does not take 12 hours. The constant current and constant voltage charging characteristics of lithium ion batteries determine that their deep charging time does not require 12 hours.
4. Is the rechargeable battery in optimal condition
Nickel based batteries have an optimal state, typically reaching their maximum capacity between 100 and 200 cycles. For liquid lithium ion batteries, there is no such cycle capacity hump phenomenon. Lithium ion batteries are not in optimal condition.
5. The higher the charging current, the faster the charging
For the charging of lithium ion batteries, increasing the constant current value of the constant current and constant voltage charging method within a certain current range (1.5C-0.5C) does not shorten the time to fully charge the lithium ion battery.