什么是电池的额定容量
在设计规定的条件（如温度、放电率、终止电压等）下，电池应能放出的*低容量，单位为安培小时，以符号C表示。容量受放电率的影响较大，所以常在字母C的右下角以阿拉伯数字标明放电率，如C20=50，表明在20时率下放电至终止电压的容量为50安小时。通俗地讲，额定容量为50安小时的蓄电池在满电的状态下， 用1安培的电流放电能放电50个小时.
什么是电池的额定电压
额定电压（标称电压）是单格电池或单块电池所应具有的电压值，代表不同材料的电池所具有的特性。铅酸电池的单格额定电压为2V、镍氢电池为1.2V、锂电池为3.6~3.7V。一般，单只电池的额定电压（标称电压）就是电池中单格额定电压值的和。
什么是电池的内阻？
是指电池在工作时，电流流过电池内部所受到的阻力。有欧姆内阻与极化内阻两部分组成。电池内阻大，会导致电池放电工作电压降低，放电时间缩短。内阻大小主要受电池的材料、制造工艺、电池结构等因素的影响。是衡量电池性能的一个重要参数，通常以充电态内阻为标准。
What is the rated capacity of a battery
The minimum capacity that a battery should be able to discharge under design specified conditions (such as temperature, discharge rate, termination voltage, etc.), in ampere hours, represented by the symbol C. The capacity is greatly affected by the discharge rate, so the discharge rate is often indicated in Arabic numerals in the lower right corner of the letter C, such as C20=50, indicating that the capacity to discharge to the termination voltage at a rate of 20 hours is 50 ampere hours. Simply put, a battery with a rated capacity of 50 ampere hours can be discharged for 50 hours at full charge with a current of 1 ampere
What is the rated voltage of a battery
The rated voltage (nominal voltage) is the voltage value that a single cell or battery should have, representing the characteristics of batteries made of different materials. The single cell rated voltage of lead-acid batteries is 2V, nickel hydrogen batteries are 1.2V, and lithium batteries are 3.6-3.7V. Generally, the rated voltage (nominal voltage) of a single battery is the sum of the rated voltage values of each cell in the battery.
What is the internal resistance of a battery?
It refers to the resistance experienced by the current flowing through the interior of the battery during operation. It consists of two parts: ohmic internal resistance and polarized internal resistance. A large internal resistance of the battery can lead to a decrease in the working voltage of the battery discharge and a shortened discharge time. The size of internal resistance is mainly influenced by factors such as battery material, manufacturing process, and battery structure. It is an important parameter for measuring battery performance, usually based on the charged state internal resistance.