I just purchased a Ridgid cordless drill with the 18v Lithium Ion battery. The one thing I noticed is that the battery life is not as long as I thought it would be, and secondly, and most confusing is, as it is used, I can notice a slight drop in power, but then it just dies. My previous cordless drill was a Craftsman with a 12 volt Nickel Metal Hydryde (or maybe Nickel Cadmium) and it would last longer, but it would become noticeable slower as it was about to die...turning very very slowly, not just die like the Ridgid. I am not sure if this is a feature to protect the battery, or something that is unique to Lithium Ion batteries?
Any information would be greatly appreciated