[TheForge] Battery technology (was Cordless drills)

[Erik Gutfeldt]

On Jan 27, 2005, at 5:22 PM, RICK KORINEK wrote:

> that Ni-mH
> batteries have about twice the amp-hour rating as a
> comparable Ni-Cd?  Does that mean for the same weight you get
> twice the energy?

It's approximately twice. A given size weighs about the same, so
it is more capacity by either size or weight. And yes that is an
advantage.

The NiMH do have the disadvantage of not staying charged up when
not in use. A NiMH battery can loose as much as 10% charge just
sitting overnight.

Erik