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Is Li-ion the ideal battery
- Jan 21, 2019 -

For many years, nickel-cadmium had been the only suitable battery for portable equipment. Ni-MH and li-ion emerged In the early 1990s. Now, lithium-ion has become the fastest growing and most promising battery chemistry. However, everything has two sides, so does li-ion.

Advantages

  • High energy density.
     

  • Does not need prolonged priming when new. One regular charge is all that's needed.
     

  • Relatively low self-discharge, less than half that of nickel-based batteries.
     

  • Low maintenance - no periodic discharge is needed and no memory effect.
     

  • Specialty cells can provide very high current.

Limitations

  • Requires protection circuit.
     

  • Subject to aging, even if not in use - storage in a cool place at 40% charge reduces the aging effect.
     

  • Transportation restrictions - shipment of larger quantities may be subject to regulatory control. 
     

  • Expensive to manufacture - about 40 percent higher in cost than nickel-cadmium.
     

  • Not fully mature - metals and chemicals are changing on a continuing basis.