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NiMH Battery FAQs  Hot PDF Print E-mail
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NiMH Battery FAQs
The Nickel-Metal-Hydride Battery
NiMH Advantages
NiMH Limitations
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Overnight Charging
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Description

NiMH Battery FAQs and Information

NiMH batteries are now more widely available than NiCd batteries. They are not as effective as NiCd batteries at delivering high rates of discharge for short periods of time.


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NiMH Battery Limitations

 

  • The NiMH Battery is less durable than the NiCd Battery.
  • Cycling Ni-MH under heavy load and storage at high temperature reduces its service life.
  • NiMH Batteries suffers from high self-discharge, which is higher than NiCd Batteries. Approximately 1% per day.
  • Limited service life of 200-300 cycles if deep cycled repeatedly.
  • The NiMH Battery has a more limited discharge rate than the NiCd Battery.
  • The NiMH Battery requires more complex charge algorithm.
  • The NiMH Battery generates more heat during charge than the NiCd Battery.
  • Requires longer charge times than the NiCd Battery.
  • The NiMH battery cannot absorb overcharge.
  • The NiMH Battery requires regular full discharge to prevent crystalline formation.

 




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