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How to Charge a Lawn Mower Battery with a Trickle Charger? 

 September 19, 2021

By  Phil Borges

There are several options that you can use when it comes to charging a lawn mower battery to get your mower ready in time for running it. One such way is to use a trickle charger that slowly transfers power to your battery. How, then, do you charge a lawn mower battery with a trickle charger?

You can charge a lawn mower battery with a trickle charger by simply connecting its cables to the terminals of the lawn mower battery. You can hook up the charger with an electrical outlet as long as you ensure that the voltage and output settings match with the battery.

There are several steps involved when it comes to this process as well as a few things you should take care of while charging. You can read ahead to find out more.

Can You Trickle Charge a Lawn Mower Battery?

Yes, you can trickle charge a lawn mower battery. In fact, this is quite an efficient way of charging your lawn mower battery. The main advantage of using a trickle charger is that you can slow down the speed at which the charger provides power and charge to the battery.

This can be a good way of ensuring steadiness so that the battery can work for longer. Further, as compared to normal chargers where overcharging can be a problem due to the high voltage supply, a trickle charger solves this issue by supplying a low voltage supply for a longer time.

How to Hook Up a Trickle Charger to a Lawn Mower Battery

In order to hook up a trickle charger to a lawn mower battery, you should take a look at the following steps.

Step 1: Unplug the Charger

The first thing you should do is to disconnect and remove the charger from the electrical outlet so that you don’t get any shocks or injuries while connecting the charger to the battery. You must also wear safety gloves and glasses to provide an extra layer of protection.

Step 2: Find the Battery

The next step is to figure out where exactly the lawn mower battery is located. Usually, you can find the battery right beneath the seat, so make sure you check that out first. If you can’t find it there or can’t figure out how to look for it, you can go through your lawn mower’s user manual.

There might also be some online resources that can help you out.

Step 3: Connect the Cables

The trickle charger will have red and black jumper cables that you must connect to your battery so that you can get it to charge. Make sure you connect the cables correctly during this step in order to prevent accidents.

To do this, take the red cable and attach it to the positive terminal of the lawn mower battery. Then, you can take the black cable and attach it to the negative terminal of the battery.

Step 4: Check the Voltage

An important step here is to check the voltage of your trickle charger and to ensure that it matches the voltage level of the battery itself. Lawn mower batteries generally tend to come with a voltage setting of 12 volts, particularly if they are recent or newer models.

Thus, having a voltage of 12 volts on your charger will be sufficient for the battery. In case your charger has multiple voltage settings, you can switch it to 12 volts. It is necessary to have this kind of compatibility so that a steady charging rate can be maintained throughout while also preventing injuries and damage.

Another important part of this step is to check the output of the trickle charger as well. This should ideally be lesser than 10 amps. In fact, an ideal output is 2-3 amps. Anything too high might cause permanent damage to the battery.

Step 5: Connect the Charger

You can now plug the charger into the power outlet and turn it on to start charging. This will begin to deliver the charge to your battery slowly and steadily.

Step 6: Disconnect the Charger

Once the charging process is done, you can disconnect the cables from the battery by first removing the black cable and then the red cable from the terminals. You can then start using your lawn mower again. Make sure you run your mower for some time so that it can get used to the charge again.

How Long Does It Take to Trickle Charge a Lawn Mower Battery?

Trickle chargers tend to have a pretty low output setting. This could even be 2-3 amps or a bit higher than that. In this case, your lawn mower battery might take up a few hours to charge. This could even go up to 24 hours at a 2-amp output. Since this is a slow pace, you don’t need to worry too much about overcharging.

However, make sure that you remove the battery from charging once you notice that the process is complete.

Frequently Asked Questions

Is It OK to Leave a Battery on Trickle Charge?

Yes, it is okay to leave a battery on trickle charge because these chargers run on very low output, which is why charging takes place slowly. This also minimizes the risk of overcharging since the rate matches the pace at which the battery tends to self-discharge.

Is It Safe to Leave a Lawn Mower Battery Charging Overnight?

It is safe to leave a lawn mower battery charging overnight because a trickle charger will take that long to charge your battery completely. This can, in fact, be helpful especially if you want to store your lawn mower for a long time.

When Should You Use a Trickle Charger to Charge a Lawn Mower Battery?

It would be a good idea to use a trickle charger to charge a lawn mower battery whenever you need to store the mower through the winter. You can also do this after winter is over and you need to reuse the mower on your lawn.

Similarly, if you find that your lawn mower battery has died or drained out, you can use this method for charging it up again.

Is There a Difference Between a Trickle Charger and a Normal Charger?

Yes, there is! A trickle charger uses a slow output and speed to transfer power or charge to the battery. This can take a long time and can be a good way to prevent overcharging.

On the other hand, a regular charger highlights speed. It powers up batteries with a much higher output. You should turn it off once the battery is fully charged unless the charger has an automatic switch-off setting. This is also better if you need to use a device immediately after charging it.

What Are Some Other Ways to Charge a Lawn Mower Battery?

There are several other ways to charge a lawn mower battery:

You can use a car battery charger and connect jumper cables to the terminals of the lawn mower battery. Leaving the power on for a while will charge up the battery.

You can jumpstart the lawn mower battery using a car battery directly. You simply need to connect jumper cables to the terminals of both batteries.

You can also jumpstart using a portable jump starter or a screwdriver.

Are There Any Maintenance Measures to Keep the Battery Running for a Long Time?

You can carry out regular maintenance tricks in order to keep your lawn mower battery running for a long time:

Make sure you clean up the batteries on a regular basis. This is important to prevent corrosion as this is a common cause behind batteries not working properly.

It might help to service your lawn mower frequently so that you can get rid of minor issues. This can improve the lifespan of the device as well.

Using a trickle charger to charge up your battery might be a great way to ensure that the charge in the battery lasts longer.

You must ensure that you store the lawn mower in good conditions in winter.

About the author

Hi, I'm Phil Borges.. thanks for reading.. My wife says I can't shut up about batteries so to save my marriage I've started this blog .. where I'd be ranting about batteries! Please leave a comment if you have any questions, I'm happy to help!

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