Caution Do Not Use a Memory Saver on This Vehicle (Better Safe Than Sorry)

Published on: May 9, 2024
Written by Ian Carter / Fact-checked by Baten Khalil

With the technological advances of today, many people are under the assumption that all cars are equipped with some type of memory saver.

This is not the case for all vehicles, and caution should be used before attempting to use a memory saver on this vehicle. There are a few reasons why using a memory saver may not be advised, and it is important to be aware of these before hooking up any type of device.

caution do not use a memory saver on this vehicle

If your car has a “memory saver” feature, you may want to think twice before using it on certain vehicles. According to some mechanics, certain makes and models of cars are not compatible with memory savers. This can cause problems with the electrical system and potentially damage the car.

So, if you’re unsure whether your car is compatible with a memory saver, it’s probably best to err on the side of caution and not use one. Better safe than sorry!

What Does a Car Memory Saver Do?

A car memory saver is a device that helps preserve the settings of your car’s electronic systems when the battery is disconnected. This can be helpful if you need to replace your battery or are making other changes that require disconnecting the power.

Memory savers plug into your cigarette lighter or power outlet and maintain a small charge while working so your car’s settings are not lost.

How Do I Disconnect My Car Battery Without Losing Memory?

how do i disconnect my car battery without losing memory

Knowing how to disconnect your car battery without losing any stored data or settings is important. Here are a few steps to follow:

First stepPark your car in a safe location and set the parking brake.
Second stepLocate the negative terminal on your battery. It will usually be marked with a “-” sign and will be black in color.
Third stepUse a wrench to loosen the nut or bolt that secures the negative cable to the terminal.
Fourth stepRepeat this process for the positive terminal and cable. Keep track of which cable goes where, as they must be reconnected in the same order when you’re finished.
Final stepWith both cables removed, you can safely disconnect your battery from its housing without worrying about losing any data or settings!
Step by Step Guideline to remove a car battery without losing memory

How Does a Car Battery Saver Work?

A car battery saver is a device that helps prolong your car battery’s life by keeping it charged when it’s not in use. It does this by using a trickle charge that keeps the battery topped up, meaning that it won’t discharge as quickly and will last longer overall.

Most car battery savers are plug-and-play devices, meaning you simply need to connect them to your cigarette lighter socket, and they’ll start working.

Some models may require you to connect to your car’s electrical system, but this is usually straightforward and can be done in just a few minutes.

Once your car battery saver is installed, it will work automatically to keep your battery charged. You can usually leave it plugged in all the time, although some manufacturers do recommend unplugging it when your car is being serviced or repaired.

If you live in an area with frequent power outages, a car battery saver can also be useful for keeping your batteries charged during these times. This can help to prevent them from discharging completely, which can shorten their lifespan. We would suggest you not leave your lights on. This won’t help your battery charge.

Obd2 Memory Saver Harbor Freight

Like most car owners, you probably don’t think much about your car’s OBDII port. But did you know that this little port can be a real lifesaver:

  • The OBDII port, or On-Board Diagnostics port, is a standard feature on all cars and trucks manufactured since 1996.
  • This port allows mechanics and technicians to hook up a diagnostic tool and read any error codes that may be stored in the vehicle’s computer.
  • But the OBDII port can also be used as a memory saver. When you disconnect your battery, whether for routine maintenance or a dead battery, all settings in your vehicle’s computer are reset.
  • This can include your clock, radio presets, and seat position. But none of those settings will be lost if you plug in an OBDII memory saver before disconnecting the battery.

There are a few different types of OBDII memory savers on the market, but one of our favorites is the Harbor Freight Memory Saver (Item # 68893). This handy little device plugs into your OBDII port. It provides constant power to keep everything in its rightful place – no more fumbling with clocks and radios after a battery disconnect!

Using Jump Starter As Memory Saver

It’s happened to the best of us. We’re in a hurry; we forget to turn off the lights or the TV, and the next thing we know, our power bill is through the roof. But what if there was a way to avoid those costly mistakes?

With a jump starter, you can save money on your power bill by using it as a memory saver. By plugging the device into an outlet, you can program it to turn off after a certain time. That way, you’ll never have to worry about forgetting to turn off your lights or appliances again.

Not only will you save money on your power bill, but you’ll also help reduce your carbon footprint. So if you’re looking for a way to be more energy-efficient, consider investing in a jump starter. It just might be the smartest investment you ever make!

How to Make a Car Battery Memory Saver?

Most people don’t know how to properly care for their car batteries, so they must replace them more often than necessary. You can significantly extend your battery’s life with a little care and attention. One way to do this is to make a car battery memory saver.

A car battery memory saver is simply a device that helps maintain the charge in your battery while you’re not using it. Keep in mind to choose the correct size battery for your car.

Otherwise, you won’t get many benefits from this device. This can be especially helpful if you live in an area with extreme temperatures, as heat and cold can shorten your battery’s lifespan. There are a few different ways to make a car battery memory saver, but one of the simplest is just to use a regular household charger.

Let’s look at the step-by-step guideline:

First stepAttach the positive cable from the charger to the positive terminal on your battery, and then attach the negative cable to something metal on your car (such as a ground wire).
Second stepTurn on the charger and let it run until your battery is fully charged.
Third StepOnce it’s done charging, disconnect the cables and store your charger in a safe place.
How to use a normal charger for car battery

If you don’t have access to a charger, you can also use jumper cables to charge your battery.:

First stepSimply attach one end of each cable to your battery’s terminals (positive to positive, negative to negative), and then connect the other ends of the cables together.
Second stepAgain, let the charging process continue until your battery is fully charged before disconnecting everything.
How to use a jumper cable to charge your battery


With either method, it’s important that you only charge your battery when it’s completely depleted – overcharging can damage it irreparably.

If you regularly use devices that drain power from your car’s electrical system (like GPS units or dash cams), consider investing in a quality voltage meter to monitor your car’s voltage level and avoid overcharging.

Car Settings Memory Saver – 9v


You may have noticed a little black box under the dash if you have a newer vehicle. This is called a memory saver, and it’s used to preserve the settings on your car’s electronic systems when the battery is disconnected.

If you own a Toyota Prius from 2010 or 2011, you should not use a memory saver when disconnecting the battery.

Doing so could cause problems with your car’s hybrid system.

Frequently Asked Questions

Car Memory Saver Halfords

There are a few different brands of car memory savers on the market, but Halfords is one of the most popular. Their devices start at around £20, which isn’t too bad considering how much hassle it can save you down the road. If you’re sick of losing all your data every time something happens to your car battery, consider picking up a car memory saver.

12V Car Memory Saver

When you disconnect your car battery, you can lose all your settings and have to start from scratch. To avoid this, use a 12V car memory saver. This handy little device will save your car’s settings, so you don’t have to start over whenever you disconnect the battery.

What Does a Memory Saver Do?

When your computer’s memory is full, it can start to slow down. A memory saver helps to clear up space on your computer by deleting temporary files and other unnecessary data. This can help speed up your computer and make it run more smoothly.

9 Volt Memory Saver for Car Battery

If you’ve ever had your car battery die on you, you know how frustrating it can be. You have to call a tow truck and pay for a new battery, and you also lose all of your stored data, like your radio presets and seat position. But what if there was a way to prevent this from happening?

Enter the 9-volt memory saver. This little device plugs into your cigarette lighter and saves all of your car’s data while the battery is disconnected. That way, when you get a new battery, none of your settings are lost.

A 9-volt memory saver is an essential tool for anyone who frequently disconnects their car battery. Whether you’re a mechanic or just someone who likes to tinker with their car, this device will save you time and frustration by keeping your data safe.

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