"Jim Higgins" wrote

I notice an earlier "expert" recommended against charging sealed
cells indoors. Hogwash! That's exactly one of the reasons
sealed cells like the Cyclons were developed. The other was to
eliminate the high labor expense - not to mention hassle - of
frequent checks and water additions.

I never said I was an "expert", I only described my own safe use of a 12v
deep cell marine battery indoors. But I notice your setup:

I'm sitting here looking at my own setup
using a standard auto starting battery - cheap non-sealed Walmart
special

- Does NOT include a sealed battery, many of which are just cheap junk that
could easily blow up with too much charge, and giving general advice to
someone not knowledgeable about batteries, would be don't charge them
indoors. That stands as good advice until you can demonstrate otherwise, and
accept the responsibility for accidents resulting from misuse of batteries
or charging equipment.

Jack Painter
Virginia Beach, Virginia