In fact the toxics are primarily hydrogen-- the natural by product of
charging a battery.  One note of caution, however; Hydrogen in concentration
in a sealed chamber with a spark = booom!  I'm not privy to how the Vanagon
battery box is designed (my '89 is coming next week) but one should be
careful to ensure that a vent to atmosphere (as opposed to the interior of
the van) is available.

Subject: Re: Hot Air

> I've noticed hot air coming from where the battery is located behind
> the passenger seat. Any way to stop this or anything to worry about?
> Thanks for any helpful advice,
> Rick
> 85 Westie

Rick...
under what circumstances? driving or just sitting there?

In either case, it means your battery box is not sealed as it is supposed to
be... that means you could be getting a lung full of the toxics that are
gassed off when the battery is charging... seal it.

Bill