Model: #OP4050A

4.6 | 526 Reviews
Compatible with all RYOBI 40V Lithium tools and chargers, the 40V 5.0 AH Lithium-ion Battery is the perfect addition to your RYOBI 40V tool collection. It's lithium-ion cells deliver fade-free performance from start to finish. The convenient on-board battery life indicator keeps you informed while you're out in the yard tackling your landscaping jobs. The 40V 5.0 AH Lithium-ion Battery's extra cell capacity is perfect for higher output tools like 40V mowers, blowers and chain saws. RYOBI 40V Lithium surrenders nothing but gas.


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This product is covered by a 3-year limited warranty.

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  • Voltage: 40
  • Amp Hours: 5.0
  • Cell Type: Lithium-ion
  • Compatibility: All RYOBI 40V Lithium Tools & Chargers
  • Weight: 4 lbs.
  • Warranty: 3 Year Limited


  • 40V 5.0 AH Lithium-ion Battery
  • Operator's Manual


40V 5AH BATTERY is rated 4.6 out of 5 by 526.
Rated 5 out of 5 by from longer lasting power charge last longer can get more done without having to change battery as often
Date published: 2023-01-28
Rated 5 out of 5 by from Made very well Received it as a Christmas gift with a chain saw and was amazed at the power it had.
Date published: 2023-01-21
Rated 5 out of 5 by from Great Battery Nice battery with plenty of power. Run time as expected
Date published: 2023-01-17
Rated 5 out of 5 by from Power Received this for a Christmas present to add to my RYOBI set. Great product. Happy to use battery power.
Date published: 2023-01-01
Rated 4 out of 5 by from middle of the road 40v battery not the biggest out there, but larger than the 2ah 40v that we already had. purchased to use with a ryobi snowblower. used half of the battery in a bout 10 minutes of clearing about 1" of powder.
Date published: 2022-12-27
Rated 5 out of 5 by from Great replacement battery My original Ryobi battery for the mower was many years old and not up to heavy, longer loads. HD had this on sale ($30 off) the week of Black Friday, so I took the plunge and glad I did. It us just a bit too tall to fit my (gen 1) mower, so the battery cover does not close all the way-not a big deal. I have used it with our blower and it has extended range time with no hot spots felt after being completely drained.
Date published: 2022-12-18
Rated 5 out of 5 by from Excellent capacity Work great for all of my the projects around the house! Long battery life and a fast charge keeps the work moving.
Date published: 2022-11-08
Rated 5 out of 5 by from Good battery Good capacity, very sturdy. I've dropped them a few times onto solid concrete, minor cosmetic damage but battery has no issues.
Date published: 2022-11-06
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