What is memory effect?
Aug ,2010

Memory effect builds up quickly with Nickel-based batteries when they are not charged and discharged fully or properly.  When memory effect is built up, it reduces the capacity because a proportion of the battery cell is occupied by memory effect and becomes unusable.  In result, the reduced capacity of battery provides shorter service time and requires more frequent times of charges. Consequently, battery’s lifetime will be reduced drastically by accumulated memory effect.