Dewalt tool pack 18v 2.4 ah

http://www.trademe.co.nz/Building-renovation/Tools/Power-tools/Drills/auction-272407924.htm

I would like to know if i could use these with a 48v setup for a 150amp rated controller and 3kw motor. I was thinking of taking them apart and having 2 packs of 54 volts in paralel?
I dont think they are lipo, would it be suitable or not? they are nicad i think

or maybe 3 of these taken apart into two packs of 54 volts?

http://www.trademe.co.nz/Building-renovation/Tools/Power-tools/Other/auction-272899543.htm

if your controller is rated 150amps you're going to need bigger batteries than that! for those prices why don't you get some decent batteries from cell_man. they will be a lot easier to build as well.

Yeah, i am rethinking what im going to do about batteries thanks.