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.