What is the difference between a NiCd and NiMH chemistry battery?
The main difference between the two is the fact that NiMH batteries (the newer of the two technologies) offer higher energy densities than NiCd batteries. In other words, pound for pound, NiMH delivers approximately twice the capacity of its NiCd counterpart. What this translates into is increased run-time from the battery with no additional bulk to weigh down your portable device. NiMH also offers another major advantage over NiCd. NiCd batteries contain cadmium, a toxic heavy metal that must be recycled. NiMH does not contain any toxic components, and can be disposed of in the trash. However, the “green” movement encourages the recycling of all battery chemistries.
