What is a Nickel-Cadmium (NiCd) battery?

Nickel-Cadmium (NiCd) battery is a type of rechargeable battery that uses nickel (Ni) and cadmium (Cd) as the materials for its electrodes. It has been widely used in portable electronic devices and power tools that require frequent use and reliable power sources. The key features of NiCd batteries include high discharge capability and long cycle life. They are particularly suitable for applications requiring high power output, providing a stable power supply. Additionally, NiCd batteries are effective even in low-temperature environments, making them suitable for harsh conditions. One significant issue with NiCd batteries is the memory effect, which occurs when the battery is repeatedly charged before being fully discharged, causing a loss of capacity over time. To avoid this, it is recommended to discharge the battery completely before recharging.

Advantages:
✅ High discharge capacity and long cycle life
✅ Suitable for low-temperature environments
✅ Fast charging capabilities
Disadvantages:
✅ Memory effect, which complicates battery management
✅ Environmental concerns due to the use of cadmium, a toxic metal
Despite being replaced by lithium-ion and nickel-metal hydride (NiMH) batteries in many applications, NiCd batteries are still used in specific niche applications where their performance characteristics are beneficial.

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