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  4. The six main parameters of lithium batte...

The six main parameters of lithium battery, you will not be fooled after reading it

1. Battery capacity   battery capacity refers to the size of the battery's stored power, usually expressed in mAh or Ah. 1AH=1000mAH. For example, 2000mAh means that it can be discharged at a current of 2A for 1 hour.  

2. Nominal voltage "The potential difference between the positive and negative electrodes of the battery is called the nominal voltage. The nominal voltage is determined by the electrode potential of the plate material and the concentration of the internal electrolyte. According to the different cathode materials of lithium battery packs, the nominal voltage will be different. The nominal voltage of lithium cobalt oxide battery is 3.7V; the nominal voltage of lithium manganese oxide battery is 3.8V; the nominal voltage of lithium iron phosphate battery is the lowest, only 3.2V. .

3. Charge termination voltage    When the battery is fully charged, the internal active material has reached a saturated state, and then continue to charge, the battery voltage will not rise, the voltage at this time is called the charge termination voltage. The lithium ion battery is 4.2V or 4.35V.6.jpg 

4. End-of-discharge voltage    End-of-discharge voltage refers to the lowest voltage allowed when the battery is discharged. The discharge termination voltage is related to the discharge rate. Generally speaking, the unit lithium-ion battery is 2.7 V. Here refers to the end voltage of a single lithium-ion battery charge and discharge.

5. The battery refers to the resistance experienced by the current flowing through the battery when the battery is working. The large internal resistance of the battery will reduce the voltage when the battery is discharged and shorten the discharge time. The internal resistance is mainly affected by factors such as materials and manufacturing process structure. It is an important parameter to measure battery performance. .

6. Self-discharge rate   The phenomenon that the capacity of the battery gradually decreases during storage after the battery is charged is called self-discharge, also known as the charge retention capacity. It refers to the retention capacity of the battery's stored capacity under certain conditions when the battery is in an open circuit state. The percentage of battery self-discharge to the total capacity measured in a certain time is called "self-discharge rate". Most of them are calculated by monthly self-discharge rate. For example, a battery pack with a capacity of 20Ah self-discharges 0.3 in one month, and the remaining 19.7Ah, the self-discharge rate is 1.5%


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