UL, 'memory effect' in NiCds is very, very unlikely to occur in normal
domestic use. It occurs when NiCd cells are recharged by exactly the
same amount at exactly the same interval several hundred times.


As in a battery pack on board a satellite.

Dead (or dying) NiCd cells supposedly caused by memory effect have
just about always been killed by overcharging.

If it gets warm when you are charging it, you are killing the batteries.

Bob