12v anomalies - or 'believe it or not'

Not really - even with muddy water there would not be much leakage current. Remember it is 12V not 240V. Fire fighters spray their water through HT lines with no problems. The biggest problem with leaving it there would be electrolysis consuming the metal bits.

PeterD

Just did a measurement. Tub of Sydney tap water, power source 12.6 volts, two probes 30cm apart. Current flow measured 2.5 milliamps (that is 0.0025 of an amp). That would take a long time to discharge a 90 amp hour battery!

I am a volunteer firefighter and when we have to spray water in the direction of powerlines we use special nozzles with a rotating teeth on the front which breaks up the water stream into separate droplets so the electricity cannot travel down the water.
See:
http://www.brushtruck.com/Secure/ecommerce/Catalog.asp?prdc=87

Even then we are still very careful. It only takes 60 milliamps through the heart to kill you. This is quite achievable at the voltage that you get in power lines!

JohnT

ROFLMAO.....good trick. :-)

Andrew

I think of a "trick" as being something that is not totally what it appears, however the battery was there to show, and indeed prove, sealed AGM's don't vent any gas to the atmosphere and are safe to use under water and also in the cabin of motor vehicles as gas does not escape, and water does not enter the case and dilute the battery acid.

The part I found interesting was the Solar panel working inside a tent, out of direct sunlight.