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troubleshooting and repair for car batteries that keep dying

It can be a vicious cycle: Your car battery goes dead. So you buy another. A few days later, the new battery dies and you return it. After a series of tests, the parts dealer finds nothing wrong with it. So you go to a repair shop for help. Fact is, you may be able to figure out what’s wrong all by yourself.

Troubleshooting your battery problem

Note: Be careful not to get battery acid on yourself or get shocked.

• First, remove the cables from the battery terminals, being careful to not strip the nut. Most require a one-half-inch open-end wrench, but you can also use a small, adjustable wrench.
• Use a flat-head screwdriver and pop off the six caps that are on top of the battery and see if the fluid is at the top of the openings. If any of them aren't filled to the top, your battery will not hold a charge. You can fill up the chambers using plain water, but it’s best to buy the proper fluid from an auto parts store.
• Once filled, replace the caps and wipe off any excess fluid. Avoid contact with the battery acid!
• Inspect your terminal cables and terminals and use a battery cleaner tool if they’re dirty.
• Reattach and tighten the terminal cables.
• Run the engine for about twenty minutes to charge the battery.

Check for other problems

• Check your belts and ensure they’re in good shape and tightly attached.
• Press down on the belt with your hand. If it’s on firmly, it won’t move.
• If you see signs of wear, replace it.

If you continue to have battery problems, you will need to get help from a mechanic. But at least you’ll know you’ve done all you can on your own.