Educate me on 12 volt batteries

parcany wrote:
Yes if your one 12 volt battery goes bad nothing will work anyway.

Correct, so the argument about one 6v 'going bad' is sorta moot. The chances a 6v battery just up and 'goes bad' for no reason are remote at best. That would usually be because the user ran them down or they're way too old and tired. The best way to rescue yourself from any battery failure is to carry a spare.