What are the common misunderstandings of lithium batteries?CR1220 battery

　　1. Isn't the function of lithium -ion batteries certain?

　　Lithium battery wholesale manufacturers believe that lithium -ion batteries are simpler by changing ambient temperature and show different functions. At a environmental temperature of 25 to 40 degrees, it will show its good function, while low temperature or high temperature status, his function will be greatly reduced. It's right. To make your lithium -ion battery fully displaying its capacity, you must pay attention to the use of the environment to avoid high and low temperature scenes. For example, the mobile phone is placed on the front desk of the car. The battery standby time of the user has no users in the south.

　　2. Is the green light of the seats light up for an hour in the future?

　　There is only one indicator of the green light. Whether it is full is the control and judgment of the battery charging process. Taking the 4.2V lithium ion battery as an example, talk about this question.

　　First control, control the output of the battery is the first constant current, and then the constant voltage (the current gradually decreases).

　　Then, when judging, the distinction current is less than a certain current value, and the green light is flashed, because the accuracy of the modulus transformation and the voltage accuracy of their own voltage are limited. The seat charging generally sets this current value of 50mA. At this moment, the green light is flashing, so the battery is indeed true. It is less than 10 % from it.

　　1) The seat charging continues to charging constant voltage and strictly control the voltage of not exceeding 4.2V. Undison is undoubtedly charging another hour, and the capacity of the battery can indeed be added.

　　2) The seat charging continues to charge, but its current control is very poor, and the battery exceeds 4.2V by accident, and continues to run up. Because lithium ion batteries cannot absorb any over -charges. Continuously applying current to the battery will form this result, and then the over -charging occurs. This is of course a well -planned seat charging. For example, the common "egg charging" of a dozen dollars of lithium -ion batteries and nickel -metalized batteries can be charged.

　　4) There is also a charging chip, for example, the 1679 chip of Maxim (Meixin). Like many mobile phones, it uses the pulse method to charge. When it flashes the green light, it is that the lithium ion battery is now full. Of course For another hour, it will not be over -charged, and it is not useless.

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