True, charging batteries will generate very explosive gas. Always
ventilate and do nothing that might arc or spark. No Smoking please. If
using a portable charger with alligator clips be sure that you do not cause
a spark. Many injuries have occurred because of ignorance on this. Unplug
the charger when ever attaching or detaching clips.

Ken



"RGarri7470" wrote in message
...
My bass boat has enclosed compartments for the batteries - like many other
kinds of boats. I have always opened the hatches on those compartments
while
charging - seems I remember that hydrogen gas is released while batteries
are
being charged and a spark can cause an explosion if they are not
ventilated.

Anybody else heard that? Do you ventilate your batteries while charging?

Ronnie

http://fishing.about.com