WARNING: Always wear protective spectacles whenever dealing with car batteries.
If done incorrectly, jumping a dead battery can be dangerous and financially risky. These procedures are ONLY for vehicles are that are both negatively grounded and the electrical system voltages are the SAME. These procedures would also apply to using emergency jump starters. DO NOT jump a frozen battery and ALWAYS connect POSITIVE to POSITIVE and NEGATIVE (-) to the ENGINE BLOCK or FRAME away from the dead starting battery. Reverse this rule to disconnect. The American Automobile Association (AAA) estimates that of the 275 million vehicles that will traveling in the U.S. during the Summer of 2003, 7.4 million (or 2.7%) will break down. Of that number, 1.3 million (or 17.7%) will require a battery jump to start their engine. The German automobile association (ADAC) estimates that their battery related service calls has increased from 21.7% per year in 1999 to 29.9% in 2004.
Chances are that your battery has some permanent sulfation, if it will not “take” or “hold” a charge and exhibits one or more of the following conditions:
Source: Greg Darden. Image by Charles Williams.
DOUBLE YOUR BATTERY LIFESPAN