Forget NiCad, they do leak sooner or later. I have a NiMH instead in my A4000.
Well,i hate to tell you this, but i have had a new varta brand NiMH that i installed in my A3000t start to leak after only 4 years.It was green and fuzzy just like the nicad's but luckily i caught it before it damaged something. I've come to the conclusion the only safe ones are the lithium watch style hack with the diode.
