how long do electric lawnmower batteries last

Are you in the market for a new electric lawnmower? Before making your purchase, it’s important to consider how long do electric lawnmower batteries last. With so many options available on the market today, battery life is an essential factor when selecting which one is right for you and your garden. So just how much juice can these machines provide before needing another charge? In this blog post, we’ll be exploring battery capacity, charging time and life expectancy as well as providing maintenance tips to ensure the optimal performance of your electric mower. Read on to find out more about what makes a great electric lawnmower.

Table of Contents:

Battery Capacity

Battery capacity is an important factor to consider when buying a lawnmower. It refers to the amount of energy stored in the battery, which determines how long it can run before needing to be recharged. The higher the capacity, the longer your mower will last on a single charge.

The most common type of battery used in electric lawnmowers is lithium-ion (Li-ion). Li-ion batteries are lightweight and have a high energy density, meaning they can store more power than other types of batteries for their size and weight. They also have low self-discharge rates, so they retain their charge over time even when not in use.

When shopping for an electric lawnmower, you should look at its battery capacity rating – usually expressed as amp hours (Ah) or watt hours (Wh). This tells you how much energy is stored in the battery and how long it will last between charges. Generally speaking, higher Ah/Wh ratings mean longer running times but also heavier batteries that may be harder to manoeuvre around your yard.

In addition to considering Ah/Wh ratings when purchasing a new mower, it is also important to keep up regular maintenance routines such as cleaning out debris from underneath decks after each use and checking connections regularly for signs of corrosion or wear and tear. Both these tasks help ensure optimal performance from any electric lawnmower regardless of its battery capacity rating.

Battery capacity is an important factor to consider when choosing an electric lawnmower, as it will determine how long the mower can be used before needing to recharge. Now let’s look at charging time and what affects it.

Key Takeaway: When shopping for an electric lawnmower, look at its battery capacity rating (AhWh) to determine how long it will last between charges. Maintaining regular cleaning and checking connections also helps ensure optimal performance regardless of the battery capacity.

Charging Time

When it comes to electric lawnmowers, one of the most important factors to consider is how long it takes to charge the battery. This can have a huge impact on its lifespan and performance.

a red and green equipment on the garden

The amount of time needed for charging depends on the type of battery in your mower. Most electric lawnmowers use either lead-acid or lithium-ion batteries, both of which require different amounts of time for charging. Lead-acid batteries typically take 8 hours or more to fully charge while lithium-ion batteries usually take about 4 hours or less.

It’s also important to note that overcharging a battery can reduce its lifespan significantly and even cause permanent damage if left unchecked for too long. To avoid this issue, you should always make sure that your charger has an automatic shutoff feature so that it stops supplying power once the battery is fully charged.

If you’re using a lead-acid battery, then you should also be aware that they tend to lose their capacity faster than other types when not used regularly; this means that if you don’t plan on using your mower frequently, then you may need to recharge it more often than usual in order keep up with its performance level. On the other hand, lithium-ion batteries are known for being able to maintain their capacity better over time and thus require less frequent recharging sessions compared with lead-acid ones – though they do still need regular maintenance such as cleaning terminals from corrosion buildup every few months depending on usage frequency.

Once you have charged your electric lawnmower battery, it is time to look at how long the battery can last before needing to be recharged – this is what we will discuss in the next heading.

Key Takeaway: Electric lawnmowers require different amounts of time for charging depending on the type of battery. Lead-acid batteries typically take 8 hours or more, while lithium-ion batteries usually take 4 hours or less. Avoid overcharging and ensure regular maintenance to maximise battery lifespan.

Maintenance Tips to Prolong Battery Life Expectancy

The average lifespan of an electric lawnmower battery is around three years if properly maintained and stored correctly during off-season months when not in use. However, this can vary depending on usage frequency and conditions such as temperature extremes which can significantly affect its longevity. To extend its life expectancy, make sure to take note of the following: Generally speaking, an electric lawnmower battery should last anywhere from two to five years with proper care and maintenance.

There are several steps you can take to ensure your battery lasts as long as possible.

1. Keep It Clean

Dirt and debris can build up on the terminals of your battery over time, which can reduce its efficiency and cause corrosion that will shorten its lifespan. To avoid this problem, be sure to regularly clean off any dirt or debris from the terminals using a damp cloth or brush.

2. Store Properly

When not in use for extended periods of time (such as during winter months), store your electric lawnmower in a cool dry place away from direct sunlight and extreme temperatures – both hot and cold weather conditions can affect the performance of your battery over time if left unchecked.

3. Charge Regularly

an old man cutting the grass

Make sure to charge your electric lawnmower’s battery at least once every three months even when not in use; this will help keep it functioning properly so that it doesn’t become drained while sitting idle for too long between uses. Additionally, make sure never to leave the charger plugged into an outlet for more than 24 hours at a time – doing so could potentially damage the cells within the battery itself leading to reduced performance or complete failure altogether.

Pay attention to how often you’re using your mower’s power source; if you find yourself running out of juice before completing each job then chances are good that either something is wrong with the motor itself or else maybe you need a higher capacity model, which would require replacing all existing components. Either way, monitoring usage patterns is key here so be aware.

It is important to consider battery life expectancy when purchasing an electric lawnmower, as it can vary greatly depending on the model. With proper maintenance and care, however, you can maximise your battery’s lifespan. 

FAQs in Relation to How Long Do Electric Lawnmower Batteries Last

How long do batteries for electric mowers last?

Batteries for electric mowers typically last between 1-3 years, depending on the type of battery and how often it is used. Lithium-ion batteries are generally more durable than other types and can last up to three years with regular use. Nickel cadmium (NiCd) batteries tend to have a shorter lifespan of around one year, but they are also cheaper than lithium-ion models. To maximise the life of your battery, make sure you store it in a cool place when not in use and keep it charged regularly.

How long does a lawn mower battery last per charge?

The lifespan of a lawn mower battery depends on several factors, such as the type and quality of the battery, how often it is used, and how well it is maintained. Generally speaking, a high-quality lead acid battery can last anywhere from two to five years with regular use. The average charge time for most batteries is around four hours; however, this can vary depending on the model and capacity of the battery. To maximise your lawn mower’s battery life, make sure to store it in a cool dry place when not in use and keep it clean by wiping off any dirt or debris that accumulates over time.

How can I make my lawn mower battery last longer?

To extend the life of your lawn mower battery, it is important to keep it clean and free from dirt and debris. Make sure you regularly check the terminals for corrosion and use a brush or cloth to remove any build-up. Additionally, ensure that you charge your battery after each use, as this will help prevent over-discharging which can reduce its lifespan. Finally, store your battery in a cool dry place when not in use to avoid extreme temperatures which can damage the cells. Following these steps should help make your lawn mower battery last longer.


In conclusion, electric lawnmower batteries can last a long time if you take care of them properly. Knowing how long do electric lawnmower batteries last will help you make sure your mower is running at its best for as long do electric lawnmower batteries last. Regular maintenance and proper storage are key to ensuring that your mower has a longer lifespan. With the right knowledge and care, you can get years of use out of your electric lawnmower battery.

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