Technical Parameters of Nickel - Cadmium Energy Storage Batteries

　　Nickel - cadmium (Ni - Cd) energy storage batteries have specific technical parameters that determine their performance and suitability for different applications.

　　One of the key parameters is the capacity, which is measured in ampere - hours (Ah). The capacity indicates the amount of electrical charge the battery can store. For example, a Ni - Cd battery with a capacity of 10Ah can supply a current of 1A for 10 hours or 2A for 5 hours. The capacity of Ni - Cd batteries can range from a few hundred milliampere - hours for small, portable devices to several hundred ampere - hours for larger - scale energy storage applications.

　　The voltage of Ni - Cd batteries is relatively stable during discharge. A single Ni - Cd cell typically has a nominal voltage of 1.2V. Multiple cells can be connected in series to achieve higher voltages for specific applications. For instance, in a 12V Ni - Cd battery pack, there are usually 10 cells connected in series.

　　The charge and discharge efficiency of Ni - Cd batteries is also an important parameter. These batteries generally have a high charge efficiency, which means they can store a large proportion of the electrical energy supplied to them during charging. The discharge efficiency is also relatively good, but it may decrease slightly over time with repeated charge - discharge cycles. The cycle life of Ni - Cd batteries is quite high compared to some other battery chemistries. They can typically withstand several hundred to over a thousand charge - discharge cycles, depending on the usage conditions and the quality of the battery.

　　The self - discharge rate of Ni - Cd batteries is relatively low. This means that they can retain their charge for a longer period when not in use. However, over time, the battery will still lose some of its charge. Another parameter is the operating temperature range. Ni - Cd batteries can operate over a relatively wide temperature range, from around - 20°C to 60°C. But extreme temperatures can affect their performance and lifespan. Understanding these technical parameters is crucial for selecting the right Ni - Cd battery for a particular application and ensuring optimal performance.

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