I have to chime in on this one too and say that Easy rider is right on this one.
NASD: Battery Safety Safety Tips for Working With Batteries
Keep sparks and flames away from the battery. Inspect the battery in natural light.
Remove wrist watches, which might make electrical contact and create sparks.
Wear safety goggles or a face shield when inspecting or cleaning the battery.
If acid does enter the eye, immediately flood with running water for at least 30 minutes. See a doctor as soon as possible.
If acid contacts the skin, wash the affected area immediately with plenty of water.
Avoid chemical burns by not rubbing eyes or skin while working with the battery.
Wash your hands immediately after completing the job.
Clean up all acid spills and flush clothing with a water and baking soda solution.
Vent caps should be tight and level. Placing a damp cloth over vent caps when charging may act as a flame arrester.
Keep batteries away from children.
Smoking or open flames should never be present in a battery area, and ventilation is important.
Store batteries in a cool, dry place. Storage temperature should be between 80ºF and 32ºF.
Don't make live connection directly to the battery. Explosive gases can be set off by a match, incorrect connection of battery cables, and careless use of tools around the battery.
Use proper lifting techniques when moving batteries. Batteries are small, but heavy and awkward to lift.