Originally Posted by Motorcycle5
The white power residue was probably either from minerals in the water reacting with the air or the by product of having a positive ground system with water stagnating in the closed space.
That debate has gone on for some time with no current(!)real answers.
My positive ground bike has never shown signs of corrosion on either of the battery terminals!
There are three Sears powersports lead -acid batteries from the past and my current(!) AGM battery now going on season 5.
My negative ground autos seem to corrode badly in a short(!) period of time and must be cleaned with baking soda from time to time.
Have read some interesting stories about + vs - ground, including the link to early phone systems.
Have seen some signs of corrosion within copper wires inside the headlamp shell when changeing out fugged up bullet and plastic 'pin' connections though!