Car Batteries

What Is A Battery Maintainer And Who Should Use It?

Mike Cross
Updated Jan 24, 2021

So there are many ways to charge a car battery and depending on the circumstance you are in one might work better than others. Most people know that once the car is running, the car will charge the battery itself with the alternator, but sometimes you can’t get the car started.

A common solution to this problem is jumping the car, but sometimes this won’t always work. If the battery is too low to jump or you don’t have another car around to use, then you need a different option.

In this article we will cover one of those different options, and that is a battery maintainer. After reading this you will know what is a battery maintainer, the advantages to one, and how to use it.

What Is A Battery Maintainer?
What Is A Battery Maintainer?

What Does A Battery MaintainerDo?

The simple answer to what a battery maintainer does is it charges your cars battery. The way it does this is by converting an AC charge from a wall outlet, into a charge that your car battery can hold.

A battery maintainer is designed to fully charge and maintain most batteries in ways that avoid the potential damaging effects that can be caused by a trickle charger.

You connect the battery maintainer to the battery and then plug it in. The maintainer converts the charge from the wall and sends it into the battery. It really is that simple.

Advantages To Battery Maintainer

The advantage to a battery maintaineris that you don’t need to have jumper cables or another battery around to use it. As long as you have a wall outlet, then you can recharge your car battery. This is why it is great to have one at your garage or house.

Another advantage to the battery maintainer is it is programmed so it won’t over charge your battery. This is good because over charging a car battery can cause major damage to it. It can cause it to leak, get hot, and other issues.

The way the maintainer keeps from over charging the battery is it can tell how much charge is in the battery. It is preset to a specific amount and when the battery it is connected to gets to that amount it will stop charging. This means you can leave it hooked up in defiantly.

One use for best battery maintainer then is to hook it up to a car every night to keep the battery charged if you know that the car has a parasitic drain. This way your car won’t be dead and needing jumped every morning.

Also, car batteries loss charge over time just from sitting. This means if you have a car that you don’t drive often, then the battery might die. That isn’t a problem if you have a battery maintainer though.

Instead of having to drive the car once or twice a week that you leave sitting, you can just hook it up to the charger, and that will keep the battery ready to go when you do decide to drive that car.

Who should use a battery maintainer?

The short answer is yes. There are several reasons why you might want to have a battery maintainer in your arsenal, most of which have been mentioned in this article. Let’s go over some of the most important reasons what you would need one.

If you have a vehicle that doesn’t get much use, the battery will eventually lose its charge, and if enough time passes, it will need replacing. A battery maintainer will keep a charge on the battery, so it stays in tip-top condition when it's time for it to be put to work again.

People that own a camper or RV will tell you that a battery maintainer has saved them from having to buy a new battery on several occasions. Since that vehicle is used rarely, the battery will naturally get little use as well.

Another good example is someone who has a collector car that only gets used on rare occasions such as car shows. One of the worst things you can do to a vehicle is to leave it parked, but if you are concerned about keeping the mileage as low as possible, a good quality battery maintainer is ideal.

Motorcycle owners are restricted by the weather. In most countries, a motorcycle is rendered useless about half the year, and those months of inactivity can wreak havoc on your battery if it doesn’t have a battery maintainer looking after it.

Speaking of cold weather, the winter months will severely limit a battery’s performance if there isn’t a constant current keeping it topped up.

Even if you don’t have a current need for a battery maintainer, it is a good idea to have one in the garage for future cases. Taking the battery out of a vehicle will not protect it entirely. Therefore, keeping the battery connected to a maintainer will ensure it is ready to go whenever you decide to put it back in service.

It is important to know that there are different models out there for different applications. While most maintainers will work for common applications, there are certain models for bigger batteries or ones that have a different chemical makeup. Having the right tool for the right job will make everything that much easier.

How To Use Battery Maintainer

How to use battery maintainer
How to use battery maintainer?

So, how do you use a battery maintainer? Well, it is really simple to hook one up. Most people can do it in ten minutes or less and the more you do it the better you get. For most vehicles, you don’t even have to remove the battery.

If you do decide to remove the batter though, then be sure to lift the battery out from the bottom and carry it by the bottom because using the top can damage the battery.

To connect it without removing the battery though, you just remove the two terminals from the car battery starting with the negative for safety. Also, you obviously want to have the car off.

Then, clamp the red positive clamp from the battery maintainer to the positive battery terminal. You want to make sure that the clamp is tight and won’t come off unless someone removes it. You then take the negative clamp, and clamp it to the engine block or frame.

This is to prevent damage to the battery. You can clamp it to the negative terminal on the battery, but it is better NOT too. The only thing is you want to make sure you clamp it to metal and not to hoses and things.

Next you can switch the amp switch, if your battery maintainer has one, and then plug it in to the wall. You might have to use an extension cord to get it to reach all the way to the wall.

After this you want to look at the color light. If the light is red, then that means the battery maintainer is working and that it is charging the battery. If it is green, then that means that the battery is already charged up to the threshold on the battery maintainer.

Depending on how dead the battery was, it might take it a little bit to charge up. It is safe to leave it charge and go work on other things or come back in the morning. After a few hours when you come back the charging should be done and the light will be green.

Once the charging is done all you have to do is unplug the battery maintainer from the wall. You then have to disconnect it from the battery. After you have finished that you can reconnect the battery to the car.

The car will now start and is ready to drive. When reconnect the battery you want to make sure to use a wrench and have them tight. If the connection is not tight, it might cause it so the car will still not start.


 battery maintainer
What is a battery maintainer?

Now you know what is a battery maintainer is and how to use one. They really are simple to use and can come in handy especially if you don’t drive your vehicle much. Also, you know that they are safe to uses and will not damage your cars battery.

A battery maintaineris a handy way to charge your cars battery and simple to use. All you do is connect it to the battery, plug it into the wall, and leave it till the battery is charged all the way.

Mike Cross
Life is too short to drive with stock audio

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