Friday, May 27, 2011

How to change car battery?

  • When all the jump-starting and coddling in the world isn't going to bring our car battery back to life.

    With the engine off, pop the hood and find the battery. Detach the negative (black) battery cable from the battery. First loosen the nut with a combination wrench. A better tool to use would be battery pliers or a battery wrench.Twist and pull up on the end of the cable with your hand. If it does not come off easily you may want to purchase a battery terminal puller from your local auto parts store. This will help prevent damage to your battery or cables. It is not recommended to use a screwdriver as a pry-bar, this could break off your battery terminal or cause other damage.Detach the positive (red) battery cable from the battery using the same method.Using a combination wrench or a socket and ratchet, remove the battery hold-down clamp.Take the battery out of the battery tray. Batteries are heavy, so grab from the bottom using both hands. If the battery has a handle, use that instead.Use baking soda mixed with water and a wire brush to clean any corrosion from the battery tray and the hold-down clamp.Clean the battery cable connectors with a wire brush. To remove heavy corrosion from the connectors, use battery-cleaning solution (available at any auto-parts store).Place the new battery in the battery hold-down tray and secure the battery with the hold-down clamp. Spray both terminal ends with anti-corrosion solution (optional). Attach and tighten the positive battery cable. Attach and tighten the negative battery cable. Check that all cable connectors are tight. If you can move them at all, your car may not start.

    THE CAR MUST BE OFF! To be sure, take your keys out of the ignition. Your battery can generate a highly flammable vapor so you should work in a well-ventilated area. In addition, the battery fluid is acid and HIGHLY corrosive to skin, eyes and metal. You need to be very careful when handling it. It is a good idea to wear gloves, and safety glasses are a must!

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