Note before connecting battery cables

WARNING: Ensure that no live objects that can short-circuit the battery are under the battery's protective cover.

Fig 1: Identifying Ignition Switch In ON Position And Connecting Negative Cable To Battery

Courtesy of VOLVO CARS OF NORTH AMERICA.

WARNING: The key must be in position 2. No one must be in the car when the battery is connected. This is a safety precaution in case an airbag module activates when the power is connected.