RE: Quick charging NiCd batteries.
NiCd's won't explode, but as FH said they can "vent". Essentially expelling their contents and becoming useless. [&o]
But yes, monitoring temperature will help prevent damage.
I first bought the Hobbico Quick Field charger years ago and used it numerous times without any trouble. I've since bought and successfully the Hobbico (I think) 330 Peak charger, and now exclusively use a Super Nova.
Dennis-