Make us your home page
Autos | Buying car batteries

Jump-start your car battery knowledge before you buy

If your car engine won't rev up after a jump-start, you may need a new battery. Because you'll be in a hurry when your car is sitting there, do your research before the crisis. Here's what to consider. McClatchy-Tribune Newspapers

Be able to read the code. Auto parts stores have a guide to help you pick the correct size.

• First, you'll need to look up the year, make and model of your car in the battery guide for a group number. Sometimes the size of the car engine also will make a difference in which group number is assigned to your car. That group number (Example: 58-600) tells you what size battery you'll need to buy.

• The second number you need to pay attention to indicates the battery's cold-cranking amps, or CCA. This measures a battery's ability to start a car in cold weather. Your car manual will tell you what CCA rating is best (Example: 460). Consumer Reports recommends steering clear of batteries with a CCA rating below the specified rate for your car, or a battery with a CCA rating 200 amps higher than what's recommended in the manual. A high rating will give the car a little more power, but it's a waste of money to go too high.

Age is key. You need to know how long the battery has been on the shelf before you buy it. The manufacture date will be labeled in one of several forms. Some dates are simply written out, other dates are written in a letter and digit code. The letter will indicate the month, A for January, B for February, etc., and the digit denotes the year, 0 for 2000. The code A5, for example, means January 2005. Dave Kruger, manager of an auto mechanics store in Newport News, Va., says batteries should be less than a year old, and Consumer Reports recommends a shelf life of less than six months.

You're paying for the warranty. Batteries typically cost $60 to $200 (except for hybrid batteries). Kruger says the cheaper batteries run for less time, with the least expensive batteries lasting only about 2 years. You can get a sense of how long the battery is expected to last by what type of manufacturer's warranty comes with it. Consumer Reports says to pay attention to the "free replacement period" in the warranty. If your battery fails after that period, you'll get only a prorated credit toward a new battery.

It should run on its own. Reserve capacity, the number of minutes a battery can run on its own if the alternator fails, is another measure of battery quality. Consumer Reports suggests buying a battery with the longest reserve capacity you can find. Consult the battery's manual for this information.

Test the alternator first. Kruger recommends testing the battery and alternator before buying a battery. He says about half of cars that won't start have a bad alternator. Auto parts stores such as AutoZone and Advance Auto perform these tests for free.

Jump-start your car battery knowledge before you buy 12/16/08 [Last modified: Tuesday, December 16, 2008 9:49pm]
Photo reprints | Article reprints

Copyright: For copyright information, please check with the distributor of this item, Tribune News Service.

Join the discussion: Click to view comments, add yours

  1. Love My Dog owner promises to treat dogs like her own


    SOUTH TAMPA — Lots of folks daydream about quitting their jobs to play with dogs, but shortly after moving to Florida 15 years ago, Natalie Conner actually did it.

    Some happy customers at the grand opening of Love My Dog Pet Resort’s third location in South Tampa on Oct. 14.
  2. Family brings edible cookie dough to Collins Produce stand


    VALRICO — Like anybody with a sweet tooth, Scott Laviano has been known to sneak behind his wife, Rose, while she bakes cookies and steal one of the dough balls from the baking sheet before it hits the oven.

    Scott, Rose and Scottie Laviano have opened Eddie Bull’s Cookie Dough inside Valrico’s Collins Produce.
  3. Philanthropist Helen DeVos, wife of Orlando Magic owner and mother of Betsy, dies at 90


    GRAND RAPIDS, Mich. — Helen J. DeVos, a philanthropist from western Michigan known for her support of children's health, Christian education and the arts, has died at age 90, her family said Thursday.

    Orlando Magic owner Rich DeVos, left, waves to fans while watching court side with his wife, Helen, during the first half of an NBA basketball game against the Chicago Bulls in Orlando. The family of Helen DeVos said the philanthropist from western Michigan known for her support of children's health, Christian education and the arts has died. She was 90. Her family said she died Wednesday, Oct. 18, of complications from a stroke following a recent diagnosis of myeloid leukemia. [Associated Press]
  4. Former Jabil executive again found guilty in 2008 double-murder


    Patrick Evans, the former Jabil executive charged with the deaths of his wife and her friend, was found guilty by a jury Wednesday night.

    Patrick Evans talks with Allison Miller, one of his three public defenders, before jury selection continues in his trial Wednesday 10/11/2017. Patrick Evans, a former Jabil executive charged with killing his estranged wife and her friend almost ten years ago, was back in court for a second trial after his original death sentence conviction was overturned by the Florida Supreme Court.
  5. SeaWorld cuts 350 jobs across company, including in Orlando


    ORLANDO — SeaWorld, which has struggled with declining attendance, announced Wednesday it is cutting 350 positions.

    Kalia, a 12-year-old orca whale, during rehearsals for the upcoming Orca Encounter at SeaWorld San Diego, on May 18, 2017. [Howard Lipin | San Diego Union-Tribune/TNS]