one merit and demerit of Ni-Cd cell over lead storage cell

Nickel Cadmium storage cells
Advantages
  • Low in energy density.
  • Long life
  • High discharge rate  
  • Economically cheap.
  • Used in  two-way radios, biomedical equipment, professional video cameras and power tools.

Disadvantages
  • Contains toxic metals
  • Environmental unfriendly.
Lead Storage Cell

Advantage
  •  Most economical   
  •  Used in  hospital equipment, wheelchairs, emergency light and UPS systems
Disadvantages
  • Light weight

  • 6
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