Vehicle Battery Injury
A 12 volt vehicle battery was being disconnected using a crescent wrench.The wrench slipped, and grounded out when it came in contact with metal. The person received a burn on his ring finger as his gold ring was in contact with the wrench.The injury was completely around the ring finger, and severe enough to cause concern about the loss of the finger from lack of adequate circulation.
Most vehicle batteries have 600 - 800 cranking amps, compared to 75 amps for stick welding, and 300 amps for air arc welding. Severe burn injuries can occur if a battery is grounded out against metal objects such as rings and other jewelry.