How to Disconnect and Install a Car Battery

Auto Mechanic Replacing Car Battery

If you’re the kind of person that likes to fix their vehicle on your own, replacing an old battery and installing a new one can be difficult. But with the use of this helpful guide brought to you by the mechanical experts at East Tennessee Dodge Chrysler Jeep RAM, you can easily do it from home. A car’s battery is what keeps all the bells and whistles on in your vehicle, so it’s important to make sure that your car battery is fresh and juiced for top performance.

Many of our customers who visit our Crossville dealer service center ask us how to disconnect and install a car battery. There’s a tried and tested method to easily disconnect and replace your vehicle’s battery. Use this guide if you’re trying to do this from home or swing by our Livingston-area service center to have a professional do it for you. Also, if you’re in the market for a new vehicle, reach out to our service center to see what deals and savings you can get on a vehicle today!

How to Disconnect a Car Battery

When you notice that your vehicle is taking too long to crank up or the lights are flickering instead of beaming, you may have to change your battery. If you bought a new car battery yourself and you want to do it from home, use the following steps to successfully disconnect your vehicle’s battery:

  • Loosen the negative gage’s nut with a wrench
  • Then remove the negative conductor
  • You’ll do the same for the positive side
  • The battery should come out after the conductors have been removed

How to Install a New Car Battery

When our Sparta-area customers ask us how to disconnect and install a car battery, we tell them, before getting at it, you have to clean the battery holding location from any residue discharged by the battery. Usually degreaser and baking soda with water helps. Also, clean the battery conductors with a wire brush. Once you have this done, do the following:

  •  Put the new battery in the holding location
  • Spray the gages with anti-corrosion fluid
  • Attach the negative (blue or black) and positive (red) cables onto the right terminals, and tighten them. 

Service Your Vehicle at East Tennessee Dodge Chrysler Jeep RAM Today

If you find learning how to disconnect and install a car battery too hard or you don’t want to break anything, bring your vehicle to our Harriman-area service center for proper maintenance. Our experienced technicians can get this done in no time, so you can get back out onto the road. Contact or visit us at our Crossville dealership for more questions on our services today!


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East Tennessee Dodge Chrysler Jeep RAM 35.985800, -85.037607.