Nothing halts your lawn care progress faster than a mower that won’t start. A reliable battery is the heart of your cordless electric mower, ensuring you have the power to tackle your entire yard without frustrating interruptions. Whether you’re replacing an aging battery or looking for a spare to extend your mowing sessions, choosing the right one is crucial for a well-manicured lawn.
This roundup features ten dependable lawn mower batteries from trusted brands, covering a range of voltages and types to suit various equipment. From direct replacements for popular Greenworks and Ryobi models to versatile deep-cycle options, these batteries are selected for their performance and compatibility, helping you get back to a perfectly cut lawn with confidence.
Our Recommended Lawn Mower Batteries
- MAFACBAC 24V Battery Replacement for Greenworks
- MAFACBAC 6Ah 40V Lithium Battery for Ryobi
- 40V Lithium Battery for Greenworks 2 Pack
- ExpertPower 12v 33ah Rechargeable Deep Cycle Battery
- NOCO Lithium NLP30 Ultra-Light 12V Battery
- WEIZE 12V 35AH Deep Cycle Battery Set of 2
- Mighty Max Battery ml18-12 12v 18ah 2 Pack
- Interstate Batteries 12V 35AH AGM Deep Cycle Battery
- VMAXTANKS V35-857 12 Volt 35AH AGM Battery
- Mighty Max Battery 12V 35Ah Lawn Mower Battery
MAFACBAC 24V Battery Replacement for Greenworks
This 24V, 6.0Ah lithium-ion battery is designed as a direct replacement for specific Greenworks 24V tools. It provides a high capacity that is suitable for extended runtime on lawn mowers, trimmers, and blowers. The battery is built to match the performance of the original equipment, ensuring your tools operate at their intended power level.
Compatibility is a key feature, with this battery working with Greenworks models 29842, 29852, and LB24A020, among others. It is a reliable power source for the entire 24V MAX system, helping to maintain a consistent and efficient lawn care routine without the need for multiple battery types.
MAFACBAC 6Ah 40V Lithium Battery for Ryobi
Power your Ryobi 40V outdoor equipment with this high-capacity 6.0Ah lithium battery. It is engineered to deliver the sustained energy needed for demanding tasks like mowing large lawns. The battery is constructed to integrate smoothly with the Ryobi 40V system for reliable performance.
This replacement is compatible with a wide range of Ryobi 40V batteries and tools, including models OP40401, OP40602, and RY401170VNM. It serves as a dependable power source for lawn mowers, weed eaters, and other compatible tools, helping to ensure your yard work is completed without power interruptions.
40V Lithium Battery for Greenworks 2 Pack
This two-pack of 40V, 6.0Ah batteries offers excellent value and convenience for Greenworks G-MAX 40V tool users. Having two batteries means you can always have a charged spare ready to go, effectively doubling your mowing or yard work time. The high capacity is well-suited for larger properties.
These batteries are compatible with a broad spectrum of Greenworks 40V tools, including lawn mowers, trimmers, and leaf blowers with model numbers like 29472 and 29462. This package is an efficient solution for users who rely heavily on their battery-powered equipment and need uninterrupted power.
ExpertPower 12v 33ah Rechargeable Deep Cycle Battery
The ExpertPower EXP1233 is a sealed lead acid battery known for its reliability in deep cycle applications. Its 12V 33Ah configuration provides steady power for a variety of equipment, including some riding mowers and utility vehicles. The absorbed glass mat (AGM) technology makes it spill-proof and maintenance-free.
Crafted with a rugged construction, this battery is built to withstand the vibrations and demands of outdoor power equipment. It is a trusted choice for users who need a durable and long-lasting power source that can handle repeated charging and discharging cycles.
NOCO Lithium NLP30 Ultra-Light 12V Battery
The NOCO NLP30 represents a significant advancement in battery technology, offering a lightweight and powerful lithium alternative to traditional lead-acid batteries. It provides over 700 amps of starting power, making it capable of handling high-demand starting needs for certain powered equipment.
Featuring an intelligent Battery Management System (BMS), it is protected against overcharging, short-circuits, and extreme temperatures. This battery is maintenance-free, ships pre-charged, and offers a exceptionally long service life, which can be a cost-effective solution over time.
WEIZE 12V 35AH Deep Cycle Battery Set of 2
This two-pack of WEIZE 12V 35Ah sealed lead acid batteries offers versatility and value. When used together in series, they can create a 24V system, which is common for many electric riding mowers and mobility scooters. Each battery is maintenance-free and built for deep cycle use.
Their application extends beyond lawn mowers to solar energy storage, trolling motors, and emergency power backups. This makes them a practical purchase for homeowners with multiple power needs, providing a reliable source of energy for various devices and equipment.
Mighty Max Battery ml18-12 12v 18ah 2 Pack
The Mighty Max ML18-12 comes as a pack of two 12V 18Ah batteries, providing a convenient solution for powering smaller equipment or for use as a backup set. These SLA/AGM batteries are spill-proof and feature a high discharge rate, which is beneficial for applications requiring a burst of power.
With a wide operating temperature range and good deep discharge recovery, these batteries are durable and built for a long service life. They are a solid, UL-certified choice for various lawn and garden tools that require reliable 12V power.
Interstate Batteries 12V 35AH AGM Deep Cycle Battery
Interstate Batteries is a well-known name in power solutions, and their DCM0035 model is a professional-grade AGM deep cycle battery. It is specifically developed for heavy-demand applications like electric mobility devices and can be adapted for certain lawn and garden equipment.
This battery is rechargeable, maintenance-free, and spill-proof thanks to its AGM and VRLA technology. It is designed for longer life and more cycles, making it an outrageously dependable choice for users who need a battery that can handle repeated, deep discharges.
VMAXTANKS V35-857 12 Volt 35AH AGM Battery
The VMAXTANKS V35-857 is a marine deep cycle battery that also serves well in lawn and garden applications. Its AGM construction ensures it is maintenance-free and resistant to vibration, a common issue with outdoor power equipment. The military-grade plates contribute to its extra durability.
With a stated reserve capacity of 75 minutes, this battery is built to deliver power consistently over time. It is a robust option for users who need a reliable 12V battery that can power larger electric mowers or utility carts through extended work sessions.
Mighty Max Battery 12V 35Ah Lawn Mower Battery
This Mighty Max Battery is specifically noted as a 12V 35Ah option for lawn mowers, indicating a design focus for outdoor power equipment. As a sealed lead acid battery, it offers a maintenance-free user experience, which is a significant advantage for busy homeowners.
It is built to provide reliable starting power and sustained energy for the duration of your mowing tasks. The 35Ah capacity suggests it is suited for larger riding mowers or those with additional power demands, helping to ensure your lawn care equipment operates as intended.
Buying Guide: How to Choose the Best Lawn Mower Battery
When it comes to finding the right battery for your lawn mower, it can feel like a maze of numbers and acronyms. I have been through this process myself, and getting it wrong means a mower that just won’t start when you need it most. The goal is a reliable start every single time, and that comes down to a few key factors. Let me walk you through what I look for.
First, you absolutely must check the battery type. Most modern mowers use a 12-volt battery, but the technology inside varies. You will mainly find lead-acid (including Absorbent Glass Mat or AGM) and lithium-ion. For me, AGM batteries are the sweet spot for value and reliability. They are sealed, so no maintenance is needed, they are spill-proof, and they hold a charge well over the winter. Lithium-ion batteries are lighter and can hold a charge even longer, but they usually come with a higher price tag. If your mower originally had a lead-acid battery, an AGM is a direct and worthwhile upgrade.
Next, pay close attention to the Cold Cranking Amps (CCA). This rating tells you the battery’s ability to start an engine in cold weather. Even though you are mowing in warmer months, a higher CCA rating generally means a more powerful and reliable start. I would not go for a battery with a CCA lower than what your mower’s manufacturer recommends. More is usually better here.
Another critical number is the Amp-Hour (Ah) rating. This is like the size of the battery’s fuel tank—it tells you how much power it can store and for how long. A higher Ah rating means the battery can run accessories like headlights or a electric clutch for a longer period, and it also contributes to a strong, consistent starting power. For a typical riding mower, look for something in the range of 20Ah to 35Ah.
Finally, physical fit and terminal type are non-negotiable. Before you buy, know the dimensions of your old battery and the location of the terminals (the positive and negative posts). The last thing you want is a battery that does not fit in the tray or has posts on the wrong side, making it impossible to connect the cables. Taking a quick picture of your old battery’s setup is a trick I always use. By focusing on these aspects—type, CCA, Ah, and fit—you can confidently select one of the 10 best lawn mower batteries for reliable starts that will keep your yard work on schedule.
Frequently Asked Questions
What is the difference between a lawn mower battery and a car battery?
This is a common point of confusion. While both are usually 12-volt, they are designed for very different jobs. A car battery is an SLI (Starting, Lighting, Ignition) battery. It is built to deliver a very large, short burst of power to crank a car engine and is then constantly recharged by the alternator. A lawn mower battery is more of a deep-cycle hybrid. It needs to provide a strong starting burst, but it also often needs to power accessories and may need to hold a charge for longer periods between uses. Using a car battery in your mower can lead to premature failure because it is not designed for the same type of discharge and recharge cycle.
Can I use a lithium-ion battery to replace my lead-acid mower battery?
In most cases, yes, you can, and it can be a great upgrade. Lithium-ion batteries are much lighter, hold a charge for much longer (so they are less likely to be dead after sitting all winter), and often have a longer overall lifespan. However, you need to make sure the voltage matches (almost always 12V) and that the physical dimensions and terminal locations are compatible with your mower’s battery compartment. Some lithium batteries even come with built-in charging ports, which is a convenient feature.
How long should a lawn mower battery typically last?
You can generally expect a good quality lawn mower battery to last between three and five years. Its lifespan depends heavily on how you treat it. Factors like how often you use the mower, making sure it is fully charged before storage, and, most importantly, how you store it over the winter play a huge role. Letting a battery sit for months completely discharged is a surefire way to kill it prematurely.
Why does my new lawn mower battery keep dying?
If a new battery is consistently losing its charge, the problem might not be the battery itself. The most common culprit is the charging system on your mower. The alternator or stator might not be working correctly and failing to recharge the battery while the engine runs. Another possibility is a parasitic drain, where something electrical—like a faulty switch or controller—is slowly drawing power from the battery even when the mower is turned off. It is also worth double-checking that the battery terminals are clean and tight, as a poor connection can prevent a proper charge. If you have checked these and are still having trouble, you may want to review the list of 10 best lawn mower batteries for reliable starts to ensure you selected a model with sufficient CCA and Ah for your specific mower.
How do I store my lawn mower battery for the winter?
Proper storage is the key to a long battery life. I always follow this routine. First, I give the battery a full charge. Then, I disconnect the negative cable (usually black) first, followed by the positive (red) cable. I store the battery in a cool, dry place, away from direct sunlight. Ideally, it should not sit on a concrete floor; a wooden shelf is perfect. For lead-acid or AGM batteries, I use a smart battery maintainer or tender throughout the winter, which keeps it at an optimal charge level without overcharging. If you do not have a maintainer, plan to give the battery a full recharge every couple of months.