How to change a car battery

How to change a car battery
How to change a car battery
The Walmart Auto Care Center will install your new battery for free, or you can follow these
easy steps to do it yourself.
What you'll need
A new replacement battery—see below for how to choose the right one.
A wrench
Disposable latex gloves
Safety glasses
Choose the right replacement battery
Before you buy a new battery, look at your current battery. Write down the following
information, and purchase a new battery with the same stats.
• Battery group (the size of the battery)
• Reserve capacity (how long the battery can run the car if your alternator fails)
• Cold-cranking amps (how well the battery performs in cold weather)
Also check your owner’s manual to ensure that a battery with the correct numbers was
previously installed. If you can’t determine which battery is correct, ask your mechanic or
automotive center expert which battery is right for your car’s make, model and year.
If you live in a cold climate and your vehicle’s owner’s manual permits, consider purchasing a
battery that’s the same size as your current one but has a larger reserve capacity and higher
cold-cranking amps. Not sure if you need the extra power? Ask your mechanic or automotive
center expert what battery will work best in your region.
Safety precautions
Whenever you work on your car, make sure the engine is off, the car is in park or gear and
the key is removed from the ignition.
Put on latex gloves and safety glasses before starting any work.
When handling a car battery, never touch both the positive and negative terminals at the
same time.
Before you start
Is your old battery covered in corrosion? Use a brush and a mixture of baking soda and water to
clean it off before you replace it. Be sure to wear gloves, so you don't touch the corrosion with
your bare hands.
Disconnect the old battery
Making sure your vehicle’s engine is off, disconnect the negative (black) battery cable from the
battery terminal by using a wrench to loosen and remove the mount that holds the negative
battery cable onto the battery. Never let the wrench touch any other metal part of the vehicle.
Once the negative cable is removed, do the same thing on the positive side. Before you take the
battery out of your car, note how it's placed. You will need to place the new battery in the same
position, with positive and negative terminals facing the proper direction.
Remove the old battery
Some batteries are held in place by a metal bar or a strip. If so, remove the nuts or bolts that
connect the bar to the car frame. Now, you're ready to pull out the battery. If you've already
bought a new battery for the car, you know how heavy they are; use caution when taking out
the old battery. Lift it with a smooth pulling motion.
Install the new battery
Put the new battery into the car facing the same direction as the old battery. Connect the
positive (red) cable to the positive terminal first. Don't touch any other metal part of the car
with your wrench as you tighten the connection. Repeat the process with the negative (black)
cable and terminal, and replace the metal bar or strip holding the battery in place, if your car
has one.
Start the car
After you've installed the new battery, start your car to make sure the battery works and that
you've tightened the connections properly. If your car doesn't start, tighten or reconnect the
battery cables. Then, start the car again.
Old batteries should be recycled. Locate the nearest Walmart Auto Care Service Center, and
recycle your old batteries there.
Shop our full selection of car batteries and accessories at your local Walmart store or at
Important Wal-Mart Disclaimer: Proper service and repair procedures are vital to the safe, reliable operation of all
motor vehicles as well as the personal safety of those performing the repairs and those riding in the motor vehicles.
Standard safety procedures and precautions (including use of safety goggles and other safety equipment, proper
tools and equipment) should be followed at all times to limit the possibility of personal injury or improper service which
could damage the vehicle or compromise its safety. Personal injury could result from the failure to take adequate
safety precautions when repairing or maintaining your vehicle. Although this material has been prepared with the
intent to provide reliable information, no warranty or representation (express or implied), including the warranties of
merchantability and fitness for a particular purpose, is made as to its accuracy or completeness. Neither is any
liability assumed for loss or damage of any kind resulting from reliance on this material and Wal-Mart shall not be
liable for any loss or damage of any kind resulting from reliance on this material. Users employ the information
contained in this material at their own risk. This material is provided only as a helpful guide and does not replace the
information and instructions contained in the motor vehicle’s owner’s manual and product manufacturer’s
recommendations. Users are cautioned to consult the motor vehicle’s owner’s manual and product manufacturer’s
recommendations for additional information and instructions. Failure to follow the motor vehicle’s owner’s manual and
the product manufacturer’s recommendations could result in damage to your vehicle or personal injury.
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