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Charger Precautions
Release Time:2022-12-22
Memory effect  
The memory effect of the rechargeable battery, when the memory effect gradually accumulates, will make the actual use capacity of the battery drop significantly. An effective way to mitigate the negative effects of the memory effect is to discharge. Generally speaking, because the memory effect of nickel-cadmium batteries is more obvious, it is recommended to make a discharge after repeated charging and use 5-10 times, while the memory effect of nickel-metal hydride batteries is not obvious, and it can be discharged after repeated charging and use 20-30 times.  
The nominal voltage of nickel-cadmium batteries and nickel-metal hydride batteries is 1.2V, but in fact, the voltage of the battery is a variable value, and fluctuates around 1.2V or so with the power is sufficient. Generally fluctuating between 1V-1.4V, different brands of batteries due to different processes are not the same, the voltage fluctuation range is not completely consistent.  
Discharging the battery is to use a small discharge current, so that the voltage of the battery slowly drops, falling to between 0.9V-1V, and the discharge should be stopped. The battery is discharged below 0.9V, which will cause excessive discharge, so that the battery is irreversible damage, the rechargeable battery is not suitable for use in the home appliance remote control, because the use of the remote control current is very small, and it is easy to cause excessive discharge in the remote control for a long time. After the battery undergoes a correct discharge, the capacity of the battery returns to the original level, so when the capacity of the battery is found to have decreased, it is best to make a discharge.  
There is an easy way to discharge the battery yourself, that is, to connect a small bead as a load, but you must use a meter to monitor the change in voltage value to prevent overdischarge.  
For choosing a fast charger or a slow constant current charger, it mainly depends on the focus of your own use. For example, friends who often go out to use digital cameras and other devices should choose a fast charger. Do not place the phone charger in humid or high temperature conditions to reduce the service life of the phone charger.  
In the process of charging, there will be a certain heating phenomenon, at normal room temperature, as long as it does not exceed sixty degrees Celsius, it will not damage the battery. Due to the inconsistency between the style of the mobile phone and the charging time, this has nothing to do with the charging performance of the mobile phone's charger.  
Charging time  
The battery capacity depends on the label on the outside of the battery, and the charging current looks at the input current marked on the charger.  
1. When the charging current is less than or equal to 5% of the battery capacity:  
Charging time (hours) = Battery capacity (mAH) ×1.6 ÷ charging current (mA)  
2. When the charging current is greater than 5% of the battery capacity, less than or equal to 10%: 
Charging time (hours) = Battery capacity (mAH) ×1.5 ÷ charging current (mA)  
3. When the charging current is greater than 10% of the battery capacity, less than or equal to 15%: 
Charging time (hours) = battery capacity (mAH) × 1.3÷ charging current (mA)  
4. When the charging current is greater than 15% of the battery capacity, less than or equal to 20%: 
Charging time (hours) = battery capacity (mAH) ×1.2÷ charging current (mA)  
5. When the charging current is greater than 20% of the battery capacity:  
Charging time (hours) = Battery capacity (mAH) ×1.1÷ charging current (mA)

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