How Many Volts Is a Lawn Mower Battery?

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The mower’s battery is one item you should be aware of and knowledgeable about before investing in a new mower.

It can be difficult to decide how much to spend on a battery, what features or specs you need, or whether or not this equipment is suitable for your mower if you aren’t an expert on batteries.

How does a mower battery function? How many volts is a lawn mower battery?

There are so many questions you want the answers to.

Fortunately, this guide on lawn mower batteries should be able to assist you enough where voltage and amps are concerned.

Also, we have included a quick rundown on features to keep an eye out for if you’re looking for a battery that will work with your lawn mower.

Lawn Mower Battery Function

An essential part of a lawn mower’s functionality is its battery. Without it, there’s no way an electric mower will start.

Batteries for lawn mowers supply electricity to start the mower engine.

Small lead-acid batteries, like those used in lawn mowers, are widely available in hardware and auto parts stores.

Depending on the type of lawn mower and the year it was manufactured, there is a slight variation in the voltage of lawn mower batteries.

As a result, there is more than one way to figure out how many volts a mower battery has.

Depending on the electrical system, the lawn mower will need a battery that can deliver six to 12 volts of electrical energy.

Typically, mower batteries are for one of two purposes: to operate an electric engine or to start a gas engine.

In either scenario, you must be aware of some common voltages.

Lawn Mower Battery Voltage

The kind of mower under consideration is the most crucial factor in battery voltage.

Although some older mowers utilize six-volt batteries, riding lawn mower batteries for gas-powered versions typically run at 12 volts.

Six-Volt Lawn Mower Batteries

In a six-volt mower battery, three battery cells are connected in series.

These batteries produce 6.3-volt DC electricity.

If the nominal voltage of a six-volt lawn mower battery is not clearly marked, you can quickly determine it at the top of the battery case.

Count the cell vent caps; this battery has three because it has three cells.

12-Volt Lawn Mower Batteries

These batteries have six cells connected in series and supply DC electricity at 12.6 volts and 12 volts.

It has six vent caps at the container’s top. Electric-start lawn mowers usually have 12-volt batteries.

how many volts is a lawn mower battery

Riding Lawn Mower vs. Push Lawn Mower Battery Voltage

Let’s get more in-depth regarding the distinctions between push and riding mower batteries now that we’ve established that mower batteries are either utilized to start gas-powered engines or to power electric motors.

While push mowers often use lithium-ion batteries, riding lawn mowers with gas engines use lead-acid batteries.

Charging time, range, and cost are the three fundamental distinctions between lithium-ion and lead-acid batteries.

Although lead-acid batteries may be less expensive, they are less durable and take longer to charge.

In addition to being lightweight, quick-charging, and giving higher voltage, lithium-ion batteries are a relatively recent innovation.

Riding mowers don’t require the added advantages of a lithium-ion battery because they mostly use the battery to start.

However, to provide tremendous power for extended periods of time, electric riding and cordless push mowers use lithium-ion batteries with a higher voltage.

As such, lithium-ion mower batteries generally have five times the voltage of riding mower batteries.

This is true for many push mower batteries, as well.

How to Find Lawn Mower Battery Voltage

There are several methods for determining the voltage of a lawn mower battery.

Sometimes, you’re lucky, as it is indicated directly on the side, but other times you need to do a little more digging.

Here are some easy tips for determining the voltage of your lawn mower battery:

Tip #1: Inspect the Battery

The simplest way to determine the lawn mower battery’s voltage has is to examine the battery directly.

Most batteries have a sizable label with a lot of helpful information on one side. You may see a text that reads “12v7Ah”, for instance.

This would imply that your 12-volt battery has seven amp-hours of capacity.

Whatever the situation, simply check for the number that comes right before the letter “V” for volts.

Most lawn mowers powered by lithium-ion batteries will provide the voltage they generate.

One thing to be aware of is that cordless push lawn mowers occasionally combine two batteries to achieve a higher overall voltage.

Be careful to keep that in mind while checking your lithium-ion batteries.

Tip #2: Reference Owner’s Manual

Checking your owner’s manual is another reliable way to find the voltage of your battery.

You should have no trouble finding the battery or electrical section where you may learn what kind of battery your lawn mower is using.

Both lawn mowers powered by lead-acid batteries and those powered by lithium-ion batteries benefit greatly from this.

Tip #3: Find Mower’s Serial Number

Look for the model and serial numbers on your mower’s deck if you don’t have one or are having trouble finding one.

These numbers are typically listed on a tiny label attached to the deck.

Although it may be challenging to find, this label is typically attached to one of the deck’s sides, the front or back of the mower, or the top of the deck directly behind the engine.

A quick internet search should lead you to your manufacturer’s page or provide a digital owner’s manual that you may consult if you already have the serial number.

Tip #4: Count Battery Cells

It is a good idea to check the number of cells in your lead-acid batteries if you have one but cannot locate any information about it or your lawn mower.

Most lead-acid batteries have little plastic caps that make it rather simple to identify the battery’s cells.

Here, the battery is given a dose of the acid and electrolyte mixture. Count your battery’s cells as soon as you can see them.

Just over two volts will be produced by each cell. You can determine the voltage by counting the battery cells and multiplying it by two.

In contrast to six-volt batteries, which only contain three cells, 12-volt batteries have six.

How Many Volts Is a Lawn Mower Battery: The Takeaway

Knowing how many volts or amps your lawn mower requires will help you find the right battery.

This is especially vital if you are planning to purchase a new battery for your lawn mower.

We hope our discussion will help you find success in finding out how many volts is a lawn mower battery and choose the right model as a result.

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