How To Change a Car Battery Without Losing Your Settings

In this video, we’ll show you how to easily change your car battery without losing your car computers’ settings or radio presets.
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Chapters in this video:
0:00 Intro
0:10 Problem
0:29 2 Solutions
0:41 OBD2 Memory Saver
1:24 External Power Supply
2:18 Outro

Products used in this video:
CTEK Power Supply and Charger:
OBD2 AA Battery Memory Saver:
NOCO Genius10:
NOCO GB20:

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Disclaimer:
Due to factors beyond the control of Classic Car Maintenance, we cannot guarantee against improper use or unauthorized modifications of this information. Classic Car Maintenance assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Classic Car Maintenance recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Classic Car Maintenance, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Classic Car Maintenance.

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5 Comments

  1. It should be noted that if you use either method that the positive battery lead will remain live all the time. I normally put a rubber glove over it to rule out any chance of it touching a metal surface

  2. @DestroyerOfLiberals February 15, 2026 at 12:36 am

    Yawn. My car has 2 batteries from factory and even if I literally take one of them out – car starts and works fine. So screw you hippies and your shitty single battery cars.

  3. Do you know why professional presenters don’t try to speak over music. Because it’s bloody stupid! Channel blocked to preserve my sanity.

  4. Just hook your new battery up with some jumper cables like you would to jump start the car.

  5. Always always always check the date on the battery before purchasing. Batteries that set for a long time on a shelf somewhere shortens their ilfe. Just like veggies and tires, fresh counts a lot.

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