Hardware Secrets has posted everything you need to know about Nickel-Cadmium (NiCd) batteries, including the infamous "memory effect" and how to prevent it.

Nickel-Cadmium (NiCd) is a very well known rechargeable battery technology, used by several electronic equipments, such as laptop computers, cell phones, cordless phones, old motherboards, etc. It is also very well known by its (in)famous “memory effect”, which makes this kind of battery to lose its charge faster when it is old than when it was brand new. In this article we will be explaining more in depth how NiCd batteries work, what and why the “memory effect” happens and how to prevent it.

The Truth About NiCd Batteries