Generally, it is necessary to first select the appropriate charger type, protection type, output voltage, and current specifications based on the type and voltage of the rechargeable battery, and then according to the grid voltage.
Select a charger that meets the corresponding input conditions. It is best to choose a fully intelligent battery charger.
Car chargers are commonly referred to as car chargers. Car chargers are mainly used in car GPS navigators. His design is exquisite, small in size, and easy to carry, which is deeply loved by the majority of free drivers. A typical car charger has an AC (input voltage) of 12V, a DC (output voltage) of 5V, and a DC (output current) of 300-400mAh.
There are many types of battery chargers on the market: rechargeable alkaline battery chargers, nickel hydrogen battery chargers, and nickel cadmium battery chargers. When purchasing a battery charger, it is recommended to buy a multifunctional battery charger to reduce some costs.
In order to prevent overcharging of the battery, it is necessary to control the charging endpoint. When the battery is fully charged, there will be some special information that can be used to determine whether the charging has reached the endpoint. There are generally six methods to prevent batteries from being overcharged:
1. Peak voltage control: Determine the end point of charging by detecting the peak voltage of the battery;
2. DT/dt control: Determine the end point of charging by detecting the rate of change in battery peak temperature;
3. T control: When the battery is fully charged, the temperature difference between the battery and the ambient temperature will reach its maximum;
4. - V control: When the battery is fully charged and reaches a peak voltage, the voltage will drop by a certain value
5. Timing control: Control the charging endpoint by setting a certain charging time, usually by setting the time required to charge to 130% of the nominal capacity;
6. TCO control: Considering the safety and characteristics of the battery, high temperature charging should be avoided (except for high-temperature batteries), so charging should be stopped when the battery temperature rises to 60 OC.
