Changing a pack charger?

[cckw]

I have a 9.6v NiCad pack for a cordless drill and light. the charger consists of a wall wart to a plug on the charger base then to the the contacts at the battery. wall wart is 11v 400mA. How do I increase the charge rate, higher voltage or higher amperage power supply? I have a 12v 2A, what will this do for me?

I would like to be able to dump a usable amount of power into it in like 10 min.

I understand what I am asking for should not be left unattended to cook since there is no thermal safety. Just want to get a fast charge when in a pinch.

thanks guys!

 

[cckw]

I'm going to bump this surely someone knows.

 

[KiwiMark]

I charge my drill packs with a Hobby Charger - I can set the chemistry type (NiCd, NiMH or Li-Ion) and whatever charge rate I think is appropriate.

This one: http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=6792 is my favourite - it'll charge damn near anything and has lots of great features. I power mine from a computer PSU - it's very easy to get 12V power from one of those. Any 10V-17V power supply will do the job though, if you use a 12V 2A supply then you are fine as long as you don't put more than ~20W of power through the charger.