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How to use the charger of public network walkie-talkie correctly?

Date:Jan 20, 2021

Everyone knows that the correct charging and maintenance of public network walkie-talkies can effectively maintain the standby time of the battery and extend the service life of the battery. Today, let’s talk about how to use the charger correctly and maintain the type of lithium battery and charger interface.


How to properly use the charger and maintain the lithium battery?

Before leaving the factory, the manufacturer will activate and pre-charge the lithium battery used in the public network walkie-talkie, so that the battery has more power. Then, the first 3-5 times of charging is called the adjustment period, and the charging time should exceed 14 hours to ensure that the lithium ion activity is fully activated. Lithium-ion batteries have no memory effect, but are very inert and should be fully activated to ensure the best performance in future use.


Many users will turn on the charging when charging the public network walkie-talkie. During the charging process, the battery discharges outward due to the use of the public network walkie-talkie, and supplies power to the inside due to the battery charging. This is likely to cause the circuit board of the public network walkie-talkie to heat due to voltage interference and damage the internal components of the public network walkie-talkie.


Before charging the public network radio, the lithium battery does not need to be discharged, nor can it be discharged. The lithium battery chargers currently produced do not have the discharge function. If the charging speed can be adjusted, it is recommended to try charging slowly and lower the fast charging mode when charging. Neither slow charging nor fast charging should exceed 24 hours. Otherwise, due to the huge electronic current generated by the long-term power supply, the battery of the public network walkie-talkie is likely to burn out the battery cell.


For the automatic fast smart charger, when the indicator light changes, it actually only means 90% full. At this time, the battery is protected by the protection board to prevent the current from overcharging, and the charger will automatically change to charge the battery at a low speed. Do not cut off the power supply of the charger immediately. It is best to charge the battery for a period of time and use it after the battery is fully charged, otherwise it will shorten the use time.


Public network interphone charger interface type

Public network walkie-talkies have different manufacturers and different rechargeable batteries, so there are many different types of interfaces. Different interfaces correspond to different public network walkie-talkie charger interfaces.


Micro USB interface: This interface is a portable version of the USB 2.0 standard and can only be inserted on one side. Only supports OTG function, compatible with USB 1.1 and USB 2.0. This kind of USB interface can only be inserted into one side of the mobile phone, and is gradually replaced by the USB-C interface.


USB Type C interface: It can be inserted on both sides, which is more convenient. It should be noted that even if the USB-C interface is used, the transmission speed is not necessarily USB3.0. At present, USB-C has gradually become the mainstream on mobile devices Interface type version.


Except that most public network walkie-talkies use the Micro USB interface, the traditional walkie-talkie chargers are divided into direct charging and base charging. Direct charging converts 220 alternating current into direct current suitable for charging the battery of the walkie-talkie, and then it is input into the walkie-talkie, and the voltage of the walkie-talkie circuit is stepped down to the battery. The charger is directly connected to the battery, and converts the mains power to the required voltage for the battery.


How the walkie-talkie charger works

The general working process of a walkie-talkie charger is to convert alternating current into pulsating direct current, that is, the current changes in magnitude but the direction remains unchanged. Correct charging is one of the important conditions to ensure battery life and performance. The commonly used charging methods are constant current charging and constant voltage charging. These two charging methods can also be combined with the two methods, that is, improving constant voltage charging or limiting current constant voltage charging. In fact, charging starts with constant current charging, and then It is constant voltage charging.


Constant current charging refers to the charge that keeps the current at a constant value. It is a widely used charging method. Most of the initial charging of the battery, the capacity detection of the battery during operation, the charging of the traction battery during operation and the charging of the battery electrode plates, are mostly charged with constant current or phase constant current. The advantage of this method is that the charging current can be determined according to the capacity of the battery, the charging capacity can be directly calculated, and the charging time can be determined. That is, the method of keeping the charging current constant during the charging process.


Before charging, the voltage of the charger is adjusted to a certain value according to the number of batteries in the series. During the charging process, the charger voltage always remains the same, and the charging current starts to be very large, gradually becomes smaller as the charging time increases, and finally becomes zero. This charging method is called constant voltage charging.


Advantages of USB Type-C interface

With the continuous development of the times, many public network intercom product interfaces have been replaced by USB Type-C interfaces. The advantages of USB Type-C interfaces are as follows:


The transmission speed is faster, and the maximum transmission speed of Type-C can reach 10Gbps, which is also the standard of USB3.1. Compared with the USB2.0 standard interface, the transmission speed is much faster.


Regardless of the front and back sides, you can plug in at will, which is very practical. You can plug in the phone to charge in the dark. Unlike the single plugging direction of the previous Micro USB interface, the Type-C interface can fundamentally solve the problem of unsuccessful plugging. Happening.


The charging speed is fast. The maximum charging power of Type-C is as high as 100W. The charging requirements of public network walkie-talkies are getting higher and higher. If the power consumption of smart public network walkie-talkies is large, the use of Type-C will solve a major problem of charging.


It can provide two-way charging. The Type-c interface can provide two-way power supply, which can charge the device itself or supply power to external devices. For example, the Type-c interface used by some power banks supports both input and output.


The Type-c interface is smaller and thinner than the Micro USB interface. The USB-C port is 0.83cm long and 0.26cm wide. The old USB port is 1.4 cm long and 0.65 cm wide. This also means that the end of the USB-C data cable will be 1/3 the size of a standard USB-A data cable plug.


The Type-c interface has strong scalability. It can transmit audio and video signals and extend to various audio and video output interfaces, such as HDMI, VGA, DVI and other differentiated transmission interfaces, which provide a great deal for terminal expansion. Research and development space.