Oldsmobile 1998 Intrigue Owner's Manual page 197

To uncover the remote positive
(+) terminal, squeeze
the sides of the red plastic cap and pull the cap
toward you.
Using
a
match near
a
battery can cause battery
gas to explode. People have been hurt doing this,
and some have been blinded. Use
a
flashlight if
you need more light.
Be sure the battery has enough water. You don't
need to add water to the ACDelco Freedom@
battery installed in every new GM vehicle. But
if a battery has filler caps, be sure the right
amount of fluid is there. If it is low, add water
to take care of that first. If you don't, explosive
gas could be present.
Battery fluid contains acid that can burn you.
Don't get it on you.
If
you accidentally get it in
your eyes or on your skin, flush the place with
water and get medical help immediately.
5-5