On Sun, 28 May 2006 18:58:52 +0100, T i m wrote
(in article ):

On Sun, 28 May 2006 18:38:45 +0100, Andy Hall
wrote:

On Sun, 28 May 2006 16:47:48 +0100, OG wrote
(in article ):

I've just decided the cheap and nasty cordless drill isn't ever going to
suddenly hold better charge. The trouble is that it can go months between
use, and a NiCd battery is not ideal if you never really run it down fully.

Is anyone aware of a decent brand where I can look to spend up to £40 on a
cordless chuckless drill that I can expect to get several years occasional
use out of without having to concentate on battery maintenance (presumably
I'd be looking at NiMh for that).

Brands and models ideally.
Cheers



I don't think that you are going to get all of these requirements out of
one
battery technology, let alone the price tag.

NiMh don't have the memory effect of NiCd batteries

What is this 'memory effect' of which you speak? Is it the effect only
ecperienced when you are powering say a satelite from a battey solar
panel where the energy use & charge periods are highly repetitive?

And should you actually get into this state *one* change of charge /
discharge will break the 'effect' ..?

Voltage depletion is probably a more accurate term, but most people haven't
heard of that, so "memory effect" has become used to refer to a number of
phenomena that cause problems where poor quality NiCds are charged
inappropriately with poor quality chargers.




I have had Nicads in many forms and uses over many years and never
experienced this 'memory effect' ?

Of all the rerchargables I have had so far the Nicads have shown to be
the most durable ..

Provided that they are good quality ones, properly charged with a decent
charger then that may well be true.

That isn't the application here though.




All the best ..

T i m