Black and Decker HPB18 charging & specs?

I have a 18v Black and Decker Cordless Drill battery. I think it’s Lipo but lost the charging cable. I’m using .2mV or .5mV to charge it. Anybody know the ‘safe’ charging or any technical spec. sheet I can abide to?

Here’s the sample model: BLACK+DECKER HPB18-OPE 18V NiCad Slide Pack Battery - Walmart.com or Amazon.com

Here’s a compatible charger but I can’t seem to find the specs on it. http://www.thebatterystop.com/BDCH01

thats a nicad pack.
not too fussy to charge unlike a li-ion.
buy a REAL imax b6 and you got most everything covered.
iirc the original charger is just a 24v wallwart with resistor anyway.