8 Best Replacement Batteries for Ryobi Lawn Mowers 2025

Dominating the field of high-capacity replacements, the Cheerlark 7.5-Ah battery is an absolute powerhouse for demanding yard work. Its standout feature is the massive 7.5Ah capacity, powered by premium lithium-ion cells that deliver a staggering 300Wh of energy. This battery directly solves the core user frustration of running out of power mid-task, transforming your Ryobi 40V tools into long-endurance machines.

In real-world testing, this battery’s performance is transformative, easily powering a Ryobi mower across a half-acre lawn with charge to spare. The sustained power output ensures tools like leaf blowers and string trimmers operate at peak performance without fading as the charge depletes. While its larger size adds some heft, the trade-off for such extended runtime is undeniable, especially for larger properties where swapping batteries is a constant interruption.

Compared to the standard Ryobi 40V 4.0 Ah Battery, the Cheerlark offers nearly double the runtime, making it the superior choice for users with extensive mowing needs. While the Ahomtikk 6.5Ah presents a compelling budget option, the Cheerlark is built for those who prioritize maximum endurance above all else. For users with large properties or multiple Ryobi tools, the Cheerlark’s superior capacity provides unmatched operational freedom.

Offering a remarkable blend of power and affordability, the Ahomtikk 4.0V 6.5Ah battery is a game-changer for budget-conscious Ryobi users. It delivers a substantial 6500mAh capacity, providing a significant upgrade over standard OEM batteries without the premium price tag. For homeowners tired of the high cost of brand-name replacements, this battery provides an accessible path to longer runtimes and less downtime.

During use, the Ahomtikk battery proves to be a reliable workhorse, capably powering a lawn mower through a medium-sized yard on a single charge. It maintains a consistent power output for both high-drain tools like mowers and lighter-duty equipment like weed eaters. The inclusion of an LED status indicator and built-in charger diagnostics are thoughtful features that help manage battery life and performance effectively.

The Ahomtikk 6.5Ah stands out as a top value contender, offering slightly more capacity than the similar Biswaye 40V 6Ah battery. While it doesn’t reach the marathon-like endurance of the Cheerlark 7.5-Ah, it strikes a perfect balance for the average homeowner who needs more power without overspending. For an impressive performance upgrade at a fraction of the OEM cost, the Ahomtikk delivers more runtime for your investment than most competitors.

The Biswaye 40V 6Ah battery establishes itself as a dependable and rugged replacement, engineered for both performance and longevity. It boasts a solid 6.0Ah capacity that provides double the runtime of many standard batteries, but its true strength lies in its construction. Featuring intelligent circuit protection and over-molded edges for impact resistance, it’s designed to withstand the inevitable bumps and drops of regular yard work.

In practical application, this battery provides ample power for most suburban lawn care routines, from mowing to trimming and blowing. The fade-free lithium-ion power ensures your tools maintain full strength from start to finish, a critical feature for achieving a clean cut on your lawn. The added durability gives you confidence that this battery is a long-term investment, not just a temporary fix.

Positioned as a value-driven workhorse, the Biswaye 6Ah offers a significant upgrade over the Ryobi 40V 4.0 Ah OEM battery. While the Ahomtikk 6.5Ah has a slight capacity advantage on paper, the Biswaye’s focus on durability and safety features makes it a compelling alternative for users who are tough on their equipment. The Biswaye 6Ah is the ideal choice for homeowners seeking a reliable power source that balances cost, runtime, and robust design.

Striking an agile and powerful balance, the ZKpilse 6500mAh battery delivers high capacity in a refreshingly manageable form factor. This unit provides a potent 6.5Ah of power, making it a substantial upgrade, yet it’s engineered to avoid the excessive weight that can plague larger batteries. This design directly addresses the user pain point of fatigue when operating handheld tools like string trimmers and hedge trimmers for extended periods.

In the field, the ZKpilse battery excels in versatility. It has more than enough juice to handle a complete lawn mowing session, but its lighter weight becomes immediately noticeable and appreciated when switching to other tools. The no-memory-effect cells allow for convenient partial charging without degrading long-term health, and the onboard LED indicator gives a clear, real-time reading of the remaining power.

When compared to the ultra-high-capacity Cheerlark 7.5-Ah, the ZKpilse offers a more ergonomic experience without a drastic sacrifice in runtime. It provides the same capacity as the battery in the ANTRobut kit but as a standalone purchase for those who don’t need a charger. The ZKpilse 6500mAh is the perfect all-rounder for users who demand both endurance from their mower and maneuverability from their handheld tools.

The ANTRobut 6.5Ah kit offers a complete and seamless power solution for anyone entering or upgrading within the Ryobi 40V ecosystem. This bundle smartly pairs a high-capacity 6.5Ah battery with a compatible OP401 fast charger, eliminating compatibility guesswork. It’s the perfect answer for users dealing with an aging battery and a failing charger, providing a single-purchase refresh for their entire tool setup.

The performance of the ANTRobut bundle is impressive, with the 6.5Ah battery providing extended runtime for medium-to-large yards. The included 2A output fast charger is a key component, capable of fully replenishing the battery in under three hours. Its diagnostic LED system actively monitors battery health during charging, a crucial feature for optimizing long-term performance and protecting your investment.

Unlike standalone options like the Ahomtikk 6.5Ah, this kit provides a guaranteed-compatible charging system, which can enhance battery lifespan. While a multi-pack like the MAFACBAC 2-Pack offers more total power, the ANTRobut bundle is ideal for users needing one reliable battery and charger to get the job done. This kit represents outstanding value for anyone needing to replace their core power components in one go.

Engineered to eliminate downtime, the MAFACBAC 40V 2-Pack delivers an endless supply of power for the most demanding yard work. This bundle includes two high-capacity 6.0Ah batteries, providing a combined 12.0Ah of energy to tackle huge properties without interruption. It directly solves the problem of waiting for a single battery to recharge, allowing you to work continuously by simply swapping packs.

In practice, this two-battery system is a productivity multiplier. You can use one 6.0Ah battery to mow your entire lawn while the second one is on the charger, ensuring a fresh battery is always ready for the next task like trimming or blowing. Each battery provides a substantial, reliable runtime, capable of handling heavy-duty use in the full range of Ryobi 40V tools.

This MAFACBAC 2-pack offers far more operational flexibility than a single large battery like the Cheerlark 7.5-Ah. While the Bonadget 2-Pack offers a higher 7.0Ah capacity per battery, the MAFACBAC bundle often provides a better overall value for its impressive combined power. For homeowners with large lots or semi-pro users, this multi-pack deal is the smartest way to guarantee you never run out of juice.

The Bonadget OP40401 7000mAh Replacement for Ryobi 40V Battery 2PACK is an unstoppable force, delivering a colossal 14.0Ah of combined capacity for users who refuse to compromise on power. Each of the two batteries boasts an impressive 7.0Ah, making this the ultimate kit for tackling commercial-scale jobs or all-day landscaping projects. Equipped with a full suite of advanced safety protections, these batteries are built to handle the rigors of continuous, heavy-duty use.

Each 7.0Ah battery is a true marathon runner, capable of pushing a Ryobi mower through the thickest grass or powering a chainsaw for extended cutting sessions. Having a second, fully charged battery on standby means you can operate for hours without interruption, a critical advantage for large-property owners and professionals. The robust internal safeguards against overheating and over-current provide peace of mind during demanding tasks.

Compared directly to the MAFACBAC 6.0Ah 2-Pack, the Bonadget offers an extra 1.0Ah of runtime in each battery, a noticeable advantage for the most power-hungry tools. This premium endurance makes it the definitive choice for users who measure their work in acres and require the absolute maximum runtime available. While carrying a higher price, the Bonadget 2-pack delivers pro-grade power that justifies the investment for serious users.

As the authentic OEM option, the Ryobi 40V 4.0Ah battery offers guaranteed performance and flawless system integration. This is the manufacturer’s own power source, ensuring perfect electronic communication with all Ryobi 40V tools and chargers. It completely eliminates the risks associated with third-party compatibility, solving the core concern of potentially damaging your tools or voiding your warranty.

While its 4.0Ah capacity may seem modest compared to aftermarket giants, it delivers a reliable and consistent runtime sufficient for small to medium-sized properties. The OP4040 is engineered to provide the ideal balance of power, weight, and performance as intended by Ryobi’s designers. For users who value dependability and peace of mind, this battery performs exactly as expected, every single time.

The choice between the Ryobi OP4040 and a third-party option like the Ahomtikk 6.5Ah comes down to a clear trade-off: capacity versus assurance. You sacrifice the longer runtime and lower cost of aftermarket batteries for the unmatched reliability and guaranteed compatibility of the OEM brand. For the brand-loyal Ryobi owner who prioritizes system integrity over raw power, this official battery is the definitive and safest choice.