10 Best Ryobi Battery 40v 2025 in the United States

The Ryobi 40V 4.0 Ah Lithium-Ion Battery OP4040 is an excellent choice for users seeking reliability and performance in their outdoor cordless tools. With a 4.0Ah capacity, it provides impressive runtime, allowing you to work longer without constantly needing to recharge. This battery is specifically designed for compatibility with a range of Ryobi's 40V tool models, making it a versatile option for those already invested in the Ryobi ecosystem. Many users appreciate that it is lighter and offers better performance compared to traditional NiCD batteries, which can reduce fatigue during extended use, making it a user-friendly choice.

On the downside, this battery does not come with a charger, meaning you'll need to purchase a compatible charger separately if you don't already own one. Additionally, while its weight is a strength, some users may still find it a bit heavy after prolonged use, especially compared to smaller batteries. It's worth noting that while the battery has decent durability, warranties can vary, so checking the specific terms before purchase is advisable.

The Ryobi 40V OP4040 battery is a strong option for those needing a dependable power source for their Ryobi tools, but potential buyers should be aware of its compatibility requirements and the need for a separate charger.

The Futurebatt [2Pack] 6.0 Ah 40 Volt Battery is designed to be a high-capacity alternative for users of Ryobi 40V power tools. With a capacity of 6.0 Ah, this battery promises longer usage times between charges, which is a significant advantage for those needing extended power for tools like lawn mowers and string trimmers. Being lighter than the original equipment manufacturer (OEM) batteries is another plus, as it can make handling tools easier.

A major strength of this battery is its wide compatibility, fitting various Ryobi 40V tools and chargers. This ensures that users with multiple tools won’t need separate batteries, simplifying equipment management. The lithium-ion composition means it doesn’t suffer from memory effects, allowing charging without capacity loss, which is especially useful for frequent, long-term use.

The integrated charging indicator is a handy feature, providing clear signals on the charging status. Durability is highlighted with the ability to handle over 500 charge cycles. The product’s weight of 5.63 pounds is moderately heavy, which could affect tool balance and user fatigue depending on the application. Lastly, potential buyers should be mindful of its weight and verify warranty support details before purchasing.

The Ryobi 40V 6.0 Ah Lithium-ion battery is designed to power most Ryobi 40V tools, making it a solid choice if you already own or plan to use Ryobi cordless power tools. Its 6.0 Ah capacity provides longer run time before needing a recharge compared to lower capacity batteries, which is beneficial for extended projects. At 4.24 pounds, it’s somewhat heavier, which may add weight to your tool but remains manageable.

The battery is built with lithium-ion cells known for good durability and maintaining charge over time, supported by Ryobi’s reputation for reliable power tool components. Compatibility is a strong point as it works with most Ryobi 40V tools, though it’s advisable to confirm compatibility with your specific model using Ryobi’s compatibility chart. User feedback highlights good performance and reliability, while some note the weight and charge duration as areas that could be improved.

For those who use Ryobi tools regularly and seek a battery balancing capacity and durability, this model is a dependable choice. If prioritizing lighter weight or faster charging, exploring alternative options might be beneficial.