Model: #OP4075A

4.7 | 18 Reviews
If you have a large yard or need extra run time, the RYOBI 40V 7.5 Ah High Capacity Battery is the perfect addition to your RYOBI 40V collection. This 7.5 Ah battery gets 4X more runtime than the RYOBI 40-Volt 2.0 Ah Compact Battery while delivering the same fade-free power and performance. All RYOBI 40 Volt batteries are compatible with all RYOBI 40V Tools and come with an on-board fuel gauge to display remaining runtime. This battery works with select tools in the RYOBI 40-Volt collection, refer to the compatibility page for more information.


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

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  • Voltage: 40
  • Amp Hours: 7.5
  • Cell Type: Lithium-ion
  • Compatibility: Select RYOBI 40V Tools (see the compatibility page for more information)
  • Warranty: 3 Year Limited


  • 40V 7.5 AH Lithium-ion Battery
  • Operator's Manual


40V 7.5AH LITHIUM-ION BATTERY is rated 4.7 out of 5 by 18.
Rated 1 out of 5 by from WARNING DOESN’T FIT LAWNMOWER OR CHAINSAW As of today 08/13/2020 Ryobi’s online description of the 7.5 AH 40V battery states that it works with all RYOBI 40V tools. I reached out to RYOBI and submitted a request to confirm it would fit in the lawnmower, unfortunately RYOBI never responded. I ordered the battery and the first thing that is obvious is that it won’t fit in my RYOBI lawnmower or my RYOBI chainsaw. This battery cost as much as my lawnmower did and now all I can use it for is to attach to my leaf blower. I am soooo disappointed. RYOBI, can you at least update your online site description to inform your customers which 40V products this won’t fit in.
Date published: 2020-08-13
Rated 5 out of 5 by from Awesome Battery! I had received a backpack blower last year as a gift. The battery that came with it was great, but this one is awesome. Sure, it's a little heavy, but that's to be expected for something with as much juice as this has. I have been able to blow-out my garage, crawl space, driveway, and all around my property without going down even one bar. I also have a battery-operated lawnmower that this fits in, and was able to mow my half-acre lot without stopping. Definitely recommend!
Date published: 2020-05-08
Rated 5 out of 5 by from Holy Runtime I got this battery a few weeks ago and it has made my runtime on my RY401130 double! This is an awesome battery and I would recommend it to everyone.
Date published: 2020-05-08
Rated 5 out of 5 by from Excellent run time! I got this around a month ago and couldn’t be happier! No more cycling batteries for long lawn projects on my large property!
Date published: 2020-05-08
Rated 4 out of 5 by from Good value for the money Purchased it with the Jet Blower about 1 month ago. Used weekly so far. I just purchased the hedge trimmer and it does the job. It has plenty of juice to power the blower and trimmer, but I wish it would last longer. I get about 45 minutes before it needs to be recharged. (Keep in mind I'm used to gas-powered everything) It charges quickly.
Date published: 2020-05-28
Rated 5 out of 5 by from Great run time A little heavier than the smaller battery but worth it's weight in gold for much longer run time. two and one half acres of trimming and weed wacking used to take two batteries. Completed the job with this one battery and still had two bars left on the battery fuel gauge. JUst plan for longer charge time.
Date published: 2020-05-08
Rated 5 out of 5 by from Power to finish the job! I have an acre and half yard and this powerful battery can finish the job! Never buy gas again. My new mower and this battery are a great combination.
Date published: 2020-05-09
Rated 5 out of 5 by from Powerful have been using the lawnmower for over a month now. Battery lasts the whole way through.
Date published: 2020-06-09
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