thats what baking soda makes, when mixed with water.  The baking soda is likely cheaper than a commercial sparkling water.  DMc

---- Ry <rylincoln@GMAIL.COM> wrote: 
> And for cleaning off the corrosion I've used just carbonated water aka soda
> water aka sparkling water etc.. works well in my experiences.
> 
> -Ry
> 
> 
> On Wed, Mar 17, 2010 at 2:42 AM, Janne Ruohomäki
> <janne.ruohomaki@gmail.com>wrote:
> 
> > On Wed, Mar 17, 2010 at 7:56 AM, Tom Hargrave <thargrav@hiwaay.net> wrote:
> > > Some people put grease on the terminals. Grease will also work but you
> > need
> > > to make sure to cover the entire terminal, even the bottom edge of the
> > > clamp. If you don't then any exposed metal will corrode.
> >
> >  If You use grease, dont overdo it and make sure You really have good
> > contact. Too much grease AND a bad contact might be fire hazard in a
> > connection on fat wire with lots of amps going through. I use grease
> > myself in almost all electrical contacts in my van (and every other
> > vehicle), but I always feel a little voice in my head asking me "what
> > if this heats up?". I have seen melted battery connectors and the way
> > the lead is deformed on those means that the amount of heat has been
> > very high and there have been several hot spots where temperature has
> > exceeded melting point of lead by a great margin.
> >
> > I think there are special greases for this that have very high flash
> > point temperatures (autoignition temperatures don't count if there's a
> > spark).  Generally I put only the best stuff in my van, but here I
> > have been using just normal synthetic spray grease. Which by the way
> > probably contains some quite volatile components also so that it might
> > be quite flammable for a while after being squirted from the can.
> >