4 DIY Methods How to Charge a Lawn Mower Battery Without a Charger?

If you found that your lawnmower battery has less charge; then what will you do? Of course, in such cases, you will think about recharging the battery. But if your lawnmower battery charger is faulty, you are definitely in trouble. Is there any way to charge the lawnmower battery without a charger? If yes, then how to charge a lawn mower battery without a charger?

You can charge the lawn mower battery through a home inverter, solar panel, UPS inverter, and car battery. If the battery is dead, first jumpstart it and then charge it by any suitable method.

Let’s talk about the easiest ways to charge a lawn mower battery without a charger.

How to Charge a Lawn Mower Battery Without a Charger — a Lawn Mower Battery

4 DIY Ways to Charge Lawn Mower Battery Without a Charger

When charging the lawn mower battery without a charger, it is necessary to be as safe as possible. Here I will share four DIY methods to charge the lawnmower battery without a charger.

Method 1: Charge with Wall Outlet Home Inverter

The first method to charge the lawnmower battery is through a wall outlet home inverter. A home inverter takes AC current and converts it to DC, which may help recharge your lawn mower battery.

Steps to Follow- Charging Lawnmower Battery Through a Home Inverter:

Step 1– Establish the Connection

First, disconnect the home inverter from the power supply before setting up the connections.

Connect the negative port of the battery to the black wire of the inverter. Then connect red to the positive port of the battery.

Step 2- Allow the Battery to Recharge

Double-check the connections and make sure you have connected them as recommended.

Switch on the home inverter; a high power supply will charge the lawnmower battery. Keep it connected until the battery is full.

A standard lawnmower battery may take 1.5 to 2 hours to charge fully.

It is the quickest but a little risky method. Only try this method when you are in a hurry. Before using that method, ensure you are equipped with all security gadgets.

Method 2: Use Solar Panels to Recharge the Lawn Mower Battery

The solar panel is the easiest and safest method to recharge the lawn mower battery. But it will be a bit slower than other methods. You may have to wait 5 to 6 hours while charging through the solar panel.

Step to Follow- Charging Lawnmower battery through Solar Panel.

Step 1- Arrange solar panel wire

Take the lawnmower battery closer to the solar panel system. You will need solar panel wires. Electric wires will not support the charging.

Step 2- Set the connection

Now connect the lawn mower battery to the solar panel. Connect the red wire of the solar panel to the battery’s positive terminal and the black wire of the solar panel to the negative terminal.

Step 3- Allow it to charge

Leave the battery for 5 to 6 hours for charging. But if you have a dead battery, it may take 2 to 3 hours more than expected.

Method 3: Use UPS Inverter to Charge Lawnmower Battery

Surely you have a UPS inverter to store energy for emergency use. It can help you in charging your lawn mower battery. UPS inverter takes AC and stores it as DC. So you can connect your lawn mower battery with it to recharge it.

Steps to Follow- Charging Lawnmower battery through UPS inverter:

Step 1- Switch off the UPS Inverter

First, read the UPS inverter user manual to ensure that you can charge a 12 V battery with this one. If it supports the 12 V batteries, then go for charging. Switch the UPS inverter; it may be risky if you try to establish a connection in a switched-on state.

Step 2- Set up the Connection

Check the UPS ports; there will be red and black ports. Connect the red port with the battery’s positive terminal and the black port with the battery’s negative terminal.

Step 3- Allow it to Recharge

Leave the battery for 2 to 3 hours to recharge. Then disconnect them and get back to the mowing job.

Method 4: Use a Car Battery to Recharge the Lawn Mower Battery

You can also charge a dead lawnmower battery through your car battery. It is only possible if you have a 12V car battery to charge the lawn mower battery. It is a quick method to recharge dead batteries.

Steps to Follow- Charge the Lawn mower battery through the Car battery

Step 1- Bring lawn mower closer to car

First, switch off your car and bring your lawn mower closer to the car. You will need to connect both vehicles’ batteries. So make them close enough that you can easily connect them.

Step 2- Establish the Connection

First, connect the lawnmower battery’s negative terminal with the car battery’s negative terminal. Then connect the lawn mower battery’s positive terminal to the car battery’s positive terminal.

Step 3- Allow it to Recharge

Leave the battery for a couple of hours to recharge. If you see the car battery has less charging, switch on the car and leave its engine at the start to keep the car battery recharged.

Charge the Lawn mower battery through the Car battery

How to Recharge a Dead Lawn Mower Battery? Easy 3 Steps

You may be unable to recharge a dead battery by following the above methods. If you have a dead battery, you should first jump-start the battery before charging with any other device.

The method of jumpstarting the lawn mower battery is not much different from charging with the car. You will also need a car battery to jumpstart the lawnmower battery but a slight change in the method.

Things you will need:

Baking Soda
Wire Brush
Jumper cables
Safety goggles and hand gloves

Step 1- Clean the Terminals

First, clean the battery terminals by applying baking soda and scrubbing with the wire brush. But wear gloves before cleaning the terminals.

Step 2- Set the Connection

Connect the car battery and lawn mower battery’s positive terminals with red wire. Then connect negative terminals with black wire.

Step 3- JumpStart the battery

Switch on your car and then restart the lawnmower. If it does not restart, leave the car engine running and try it after one or two minutes.

Once the lawn mower starts, leave it for a couple of seconds. Remove all cables in reverse order and charge the battery with any of the above methods.

Frequently Asked Questions (FAQs):

Can I use my car’s battery charger to charge my lawn mower battery?

Yes, you can use the car charger to recharge your lawn mower battery. You must follow a similar process as the lawn mower battery charger. But it will only work if you have a 12 V battery.

Can I jump-start my lawn mower battery without a car battery?

Yes, if you do not have a car, then keep the jump starter equipment. Jump pack equipment is inexpensive but can help you jump-start every type of battery.

How do I know my lawn mower battery is dead?

A low-charging battery gives a clicking sound when you start the engine. So bring your lawn mower to a quiet place and try to start it. Try to listen to the clicking sound; if you do not hear a clicking sound, it means the battery is dead.

Can you jump-start a 6 V lawn mower battery with a 12 V battery?

Firstly, it is not a recommended method. But if you want to charge a 6V battery with a 12V one, you must have the right cables. Otherwise, skip this idea.

Final Verdict

Well, you have learned many ways to charge lawnmower batteries without a charger. I will suggest you do this with great care. Keep in mind your safety is more important than everything. If you feel hesitant, it is better to call professional services for help.

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4 DIY Methods How to Charge a Lawn Mower Battery Without a Charger?

4 DIY Ways to Charge Lawn Mower Battery Without a Charger