What happens if metal touches a battery?
What happens if metal touches a battery? So when a “piece of metal” touched the positive post—-that piece had to be connected to ground. You thus functionally “shorted out” the battery, if not corrected, this will damage the battery and could cause a fire. What causes a car battery to arc? Any arcing is caused by amperage flow, slight arcing is normal. If you are getting excessive arcing when touching the - battery cable to ground or - post that means an electrical component in the system is powered on that should not be on or an electrical component or...