Oh, that's a good one. We better alert the Coast Guard as well as the
Fed DOT and every State DOT. There are millions of boats, RVs, trucks,
etc running around on our highways and waterways with multiple batteries
in parallel. The worst danger must surely be the perhaps million homes
with solar electricity and racks of batteries in parallel. This could
well be a Homeland Security issue as well, should some terrorist figure
out a way to exploit this dangerous situation. Wait, now that I think
about it, the dangers are even larger. Many  Hospitals, Universities,
Government Offices, Corporate Computer Centers, etc. have battery backup
systems in case of power failure. These often have massive battery
banks, all wired in PARALLEL!!!  CALL THE FEDS NOW!!!

But wait, since this horrific situation has existed for decades, we
should have heard of many tragedies from this deplorable practice. That
can only mean one thing, THE FEDS ARE IN ON IT!!! They must dispatch the
black helicopters to each incident site to put the lid on any news
stories and so avoid a general panic. They must be in the pockets of the
LARGE CORPORATE BATTERY MANUFACTURERS!!!

I know, I'm gonna call 60 Minutes. Wait, what's that new clicking sound
in my phone......

Vince S wrote:

>.....
>The problem with connecting them in parallel is if one cell in one
>shorts. The other battries will try to balance the voltage and dumping a
>lot of current into the bad battery cause it to produce significant
>heat. Hence a series safety problem.....
>
>