Model: #OP4050A

4.6 | 520 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 520.
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
Rated 5 out of 5 by from Great I bought a month ago. I love it. It holds the charge that I need and it's power
Date published: 2022-11-03
Rated 5 out of 5 by from Replacement batteries Needed to replace two 5ah batteries that do not hold a charge for very long. These work great.
Date published: 2022-10-15
Rated 4 out of 5 by from It’s ok I got this as a replacement hopefully will last longer than the last one.
Date published: 2022-10-14
Rated 2 out of 5 by from Intermittent Dosen't make good contact. It stops running mower and/or hedge cutter even with full charge. I have to reinstall and restart tool. Stops after a short time and have to hold in to get it to work longer.
Date published: 2022-10-03
Rated 3 out of 5 by from Great while it lasts Battery only lasted a year, on the positive note customer service was great and warranty covered the extremely fast shipping. Was told it would take around 10-15 business days, it arrived in 2!!!!
Date published: 2022-09-29
Rated 5 out of 5 by from Awesome power and longevity This battery will mow and weed eat my 1/4 acre lot easy. Love it
Date published: 2022-09-07
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