Upgrading your lawn mower’s battery to a modern lithium-ion solution can revolutionize your yard work. These power sources offer significant advantages over traditional lead-acid batteries, including a dramatically longer lifespan, faster starting power, and a fraction of the weight. Whether you need a direct replacement for your riding mower or a high-capacity pack for a cordless model, the right battery ensures a reliable start and consistent performance every time.
Navigating the options can be challenging, which is why we have compiled a list of the top-performing lithium-ion batteries for 2025. Our roundup features batteries compatible with major brands like John Deere, Ryobi, EGO, and Greenworks, as well as versatile deep-cycle options for custom applications. This guide will help you find the perfect power source to keep your lawn equipment running smoothly and efficiently throughout the mowing season.
The Best Lithium-Ion Batteries for Your Lawn Mower
- TYKOOL 400CCA, Group U1 Lithium LiFePO4 Lawn Mower Battery
- Cheerlark Upgraded 7.5-Ah Replacement for Ryobi 40V Battery
- MAFACBAC 29472 for Greenworks 40V Battery: 40 Volt 6.0Ah
- eJiasu Replacement Battery for EGO 56V- EGO 56 Volt Power 5.0 Ah
- MAFACBAC 24V Battery Replacement for Greenworks: 24 Volt 6.0Ah
- Briggs & Stratton 48V MAX 5.0 Lithium-ion Battery for Snapper
- ExpertPower Standard 12V 7AH Rechargeable SLA Battery
- WEIZE 12V 100Ah Mini LiFePO4 Battery, Built-in 100A Smart BMS
- SOK Battery 100Ah 12V LiFePO4 Deep Cycle Battery by SOK
- Mighty Max Battery 12V 100Ah LiFePO4 Deep Cycle Battery
TYKOOL 400CCA, Group U1 Lithium LiFePO4 Lawn Mower Battery
The TYKOOL U1 battery is a powerful and lightweight LiFePO4 upgrade for your riding lawn mower or garden tractor. It delivers 400 cold cranking amps (CCA) for instant starts, which is twice the power of many standard lead-acid batteries. Weighing under four pounds, it is significantly lighter than traditional options, making installation and handling much easier.
This battery is designed for longevity, offering over 3000 charging cycles for a service life that is five times longer than lead-acid. It is a direct replacement for GROUP U1 batteries and is compatible with a wide range of equipment from brands like John Deere, Cub Cadet, and Craftsman. Its maintenance-free design and stable 12.8V output provide reliable power season after season.
Cheerlark Upgraded 7.5-Ah Replacement for Ryobi 40V Battery
Extend your mowing time with the Cheerlark 7.5Ah battery, a high-capacity replacement for Ryobi 40V tools. Its upgraded 7500mAh capacity provides longer run times for demanding tasks, allowing you to cover more ground on a single charge. This lithium-ion battery is built with quality cells to ensure a long lifespan and consistent performance.
This battery is fully compatible with Ryobi 40V systems, including models OP40601, OP4040, and OP4050, and works with original Ryobi chargers. It has no memory effect, meaning you can charge it as needed without losing capacity. Certified for safety, it is a reliable and cost-effective power source for your entire Ryobi 40V tool ecosystem.
MAFACBAC 29472 for Greenworks 40V Battery: 40 Volt 6.0Ah
The MAFACBAC 40V 6.0Ah battery is a dependable replacement for Greenworks G-MAX 40V lawn mowers and tools. It delivers the power and runtime needed to handle your entire yard, from mowing the lawn to trimming edges. As a direct replacement for model numbers 29472 and 29462, it integrates seamlessly with your existing Greenworks equipment and chargers.
This lithium-ion battery is engineered for durability and is compatible with a wide array of Greenworks 40V tools, including trimmers and leaf blowers. It provides a reliable power solution that helps you maintain a pristine lawn without the hassle of cords or gas.
eJiasu Replacement Battery for EGO 56V- EGO 56 Volt Power 5.0 Ah
Power your EGO POWER+ tools with the eJiasu 56V 5.0Ah replacement battery. This battery is designed to deliver strong, consistent performance, providing up to 20% more power than some other alternatives. Its 5Ah capacity supports long-lasting operation, making it ideal for extended use with lawn mowers, leaf blowers, and trimmers.
Safety and reliability are key features, with an integrated microchip offering protection against overload, short-circuit, and over-voltage. It is compatible with most EGO 56V tools and chargers, including models like the BA2800 and LB6504. This battery is a solid choice for maintaining the high performance you expect from your EGO equipment.
MAFACBAC 24V Battery Replacement for Greenworks: 24 Volt 6.0Ah
For owners of Greenworks 24V tools, the MAFACBAC 24V 6.0Ah battery offers a high-capacity power solution. This lithium-ion battery is a direct replacement for models 29842 and 29852, providing ample energy for your lawn mower, trimmer, or blower. The 6Ah rating ensures you have extended run time to complete your yard work efficiently.
This battery is built to work with the Greenworks 24V system and its compatible chargers. Its reliable performance makes it an excellent choice for powering a suite of cordless lawn care tools, giving you the freedom to work without being tethered to an outlet.
Briggs & Stratton 48V MAX 5.0 Lithium-ion Battery for Snapper
The Briggs & Stratton 48V MAX battery is the official power source for Snapper HD cordless electric tools. It is engineered to provide increased power levels, which keeps your mower and other tools running longer on a single charge. This ensures you can tackle large lawns with confidence and consistent performance.
This battery features five intuitive charge indicator lights that allow you to check the power level at a glance. With a full charge time of 150 minutes, you can quickly get back to your yard work. It is a reliable and robust battery designed specifically for the Snapper HD system.
ExpertPower Standard 12V 7AH Rechargeable SLA Battery
The ExpertPower 12V 7Ah is a trusted sealed lead-acid (SLA) battery, offered here as a reliable and maintenance-free option for certain lawn mower models and power equipment. While not lithium-ion, it provides stable power and is a proven solution for many starting and deep-cycle applications. These batteries are valve-regulated and require no upkeep.
With a typical lifespan of 3-5 years in standby use, this battery is a dependable choice. It comes with F1 terminals and is known for its ease of use. For those seeking a cost-effective and proven power source for compatible equipment, the ExpertPower battery remains a highly reviewed option.
WEIZE 12V 100Ah Mini LiFePO4 Battery, Built-in 100A Smart BMS
The WEIZE 12V 100Ah Mini LiFePO4 battery is a powerhouse for custom or commercial mowing applications. Utilizing advanced lithium iron phosphate technology, it provides 1280Wh of energy in a compact size that is 25% smaller than standard 100Ah batteries. It weighs half as much as a lead-acid battery and lasts at least five times longer, with over 2000 cycles at 100% depth of discharge.
Its built-in 100A Smart BMS offers comprehensive protection against overcharge, over-discharge, overcurrent, and short circuits. It also includes critical cold weather protection. This makes it an excellent choice for powering custom electric mowers, large solar setups, or other high-demand off-grid applications where space and weight are considerations.
SOK Battery 100Ah 12V LiFePO4 Deep Cycle Battery by SOK
The SOK 100Ah LiFePO4 battery is a premium deep-cycle battery built for extreme longevity and performance. It delivers an impressive 4,000 to 8,000 cycles, which is over ten times more than most lead-acid batteries. Weighing 60% less than its lead-acid counterparts, it is easier to install and handle in custom mower or power cart setups.
A standout feature is the built-in Bluetooth connectivity, allowing you to monitor voltage and current in real-time via a smartphone app. The intelligent BMS provides full protection, including low and high-temperature cut-offs. With no memory effect and excellent charge retention, this battery is a top-tier choice for demanding, long-term use.
Mighty Max Battery 12V 100Ah LiFePO4 Deep Cycle Battery
The Mighty Max 12V 100Ah LiFePO4 battery is a robust deep-cycle option known for its reliability in various applications, including custom electric lawn equipment. It leverages lithium iron phosphate technology to offer a long cycle life and stable power delivery. This battery is significantly lighter and more compact than traditional lead-acid batteries of similar capacity.
It is designed to handle repeated deep discharges, making it suitable for powering electric mower motors over extended periods. Built with a protective BMS, it safeguards against common battery issues. The Mighty Max brand is recognized for providing durable power solutions for solar, RV, and marine use, translating well to heavy-duty lawn care needs.
Buying Guide: How to Choose the Best Lithium Ion Batteries for Lawn Mowers
So, you’re looking at getting a new battery for your electric mower. It can feel a bit overwhelming with all the numbers and acronyms thrown around. Let me break down the key things I always check before buying a replacement. Getting this right means a mower that starts easily and gets the whole yard done without quitting on you.
First up, and this is the big one: voltage and compatibility. This is non-negotiable. You can’t just slap any battery into your mower. If your mower is a 40V system, you need a 40V battery. A 20V battery won’t have enough power, and an 80V battery could fry your mower’s electronics. Check your mower’s manual or the label on the old battery to be absolutely sure. Many brands have proprietary shapes and connectors, so a battery from one brand often won’t physically fit or work with another brand’s mower, even if the voltage matches.
Next, think about amp-hours (Ah). This number tells you the battery’s capacity, or how long it can run. A higher Ah rating means longer runtime. If you have a small, flat lawn, a 2.0Ah battery might be sufficient. But if your yard is larger or has thick grass, you’ll want to look for a 4.0Ah, 5.0Ah, or even higher. I always recommend getting the highest capacity battery you can comfortably afford, because nobody likes having to stop halfway through to recharge.
You’ll also want to consider the battery chemistry and build quality. We’re talking about lithium-ion batteries here, but even within that category, there are differences. Look for batteries that use high-quality cells (like from known manufacturers such as Samsung or LG) and have a good Battery Management System (BMS). The BMS is the brain of the battery; it protects against overcharging, over-discharging, and overheating, which significantly extends the battery’s overall lifespan.
Finally, don’t forget about the warranty and brand reputation. A longer warranty is a strong sign that the manufacturer trusts their product. Most reputable brands offer at least a 2 to 3-year warranty on their lithium-ion batteries. It’s also worth reading reviews to see how a particular battery holds up over time. A cheap, no-name battery might save you money upfront, but if it dies after one season, it’s not much of a bargain. Investing in a reliable battery from a trusted brand for your lawn mower is one of the best decisions you can make for a hassle-free mowing experience.
Frequently Asked Questions
How long do lithium-ion batteries for lawn mowers typically last?
In terms of daily use, a single charge on a modern lithium-ion battery can typically power a mower for 45 minutes to over an hour, depending on the battery’s amp-hour (Ah) rating and your grass conditions. Regarding overall lifespan, you can generally expect a good quality battery to last between 3 to 5 years, or about 500 full charging cycles, before you notice a significant drop in its ability to hold a charge. Proper care, like storing it in a cool, dry place and not constantly draining it to zero, will help it reach its full potential.
Can I use a higher Ah battery in my mower if the voltage is the same?
Yes, absolutely! This is one of the most common questions I see. As long as the voltage matches (e.g., both are 40V), using a battery with a higher Ah rating is not only safe, it’s beneficial. Think of it this way: the voltage is the “power,” and the amp-hours are the “fuel tank.” A higher Ah battery simply gives you a larger fuel tank, meaning you can mow for a longer time on a single charge. It won’t make your mower more powerful, but it will definitely extend your runtime.
What is the proper way to store my lawn mower battery over the winter?
Winter storage is crucial for maximizing your battery’s life. I never store my battery fully charged or completely empty. The ideal storage charge is around 40-60%. I give it a partial charge to get it into that range, then I remove it from the mower and store it in a cool, dry place inside my house—never in a freezing cold shed or a scorching hot garage. It’s also a good habit to give it a top-up charge every few months during long-term storage to keep it healthy.
Are aftermarket or generic batteries safe to use?
This can be a bit of a gamble. While there are some reputable aftermarket companies that make compatible batteries, many generic brands cut corners on safety features and cell quality. A cheap battery might not have a proper Battery Management System (BMS), which can be a fire hazard. It also might not deliver consistent power to your mower. For something as important as the 10 best lithium ion batteries for lawn mowers, I personally stick with batteries from the original equipment manufacturer (OEM) or highly-rated, well-known third-party brands with lots of positive user reviews.
Why does my new battery not charge or seem to hold a charge?
This is frustrating, but a few things could be happening. First, double-check that the charger is working and properly connected. If that’s fine, the battery might have entered a protection mode from being drained too low. Leave it on the charger for a few hours to see if it kicks in. If it’s brand new and won’t charge at all, it could be a dud—this is where that warranty comes in handy. Contact the seller for a replacement. For an older battery, it might simply be at the end of its life and need to be recycled.