Model: #OP4075A

4.7 | 43 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.


Ryobi three year warranty logo

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

The RYOBI 40V System features over 50 products, providing versatility to get the job done.

View our current promotions for new product releases and the latest RYOBI savings!

Ryobi Help+

Your one stop destination for tips & techniques, manuals, troubleshooting, FAQs and more!


  • 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 BATTERY is rated 4.7 out of 5 by 43.
Rated 5 out of 5 by from Good Battery Bought to replace a battery that would no longer hold a charge
Date published: 2023-05-13
Rated 5 out of 5 by from Fits my lawn mower!! I bought 2 of these batteries to extend the run time of my lawn mower a Ryobi RY401014 and it did just that! I was using a 40 volt 6 Ah battery and almost completed my lawn on a single charge (2 batteries). With the 40 volt 7.5 Ah batteries I can complete my lawn with power to spare. It would be especially useful if the grass is longer than usual.
Date published: 2023-05-10
Rated 5 out of 5 by from Battery mower Long lasting easy to install and remove from mower.
Date published: 2023-04-27
Rated 3 out of 5 by from BATT 40V Just purchase tool kit Blower and Trimer with Batt and charger. Charge Batt all night to have full charge. Used blower first to see how matched my old one and it was great. Batt only lasted 2 hours, that is a disappointment.
Date published: 2023-03-25
Rated 4 out of 5 by from Just Purchase Purchase 2 days ago. Cut the grass. Lasted a long time
Date published: 2023-03-10
Rated 1 out of 5 by from failed after 5-6-ueses 40v batt on chainsaw. Chainsaw is great, but battery is crap
Date published: 2023-02-27
Rated 5 out of 5 by from This battery is a BEAST! I bought two of these for my Ryobi Pole Saw, which came with a puny 2AH 40V battery. This 7.5AH battery is heavy, which actually helps to balance out the chain saw on the end of the pole assembly. I definitely have to use the shoulder strap to support the whole assembly, but with this battery, it's a tree-limb-cutting monster!
Date published: 2023-01-25
Rated 4 out of 5 by from Big Battery I purchased this battery as part of the package for a Whisper Series snow blower. I have used the snow blower once on a light snowfall and it performed well.
Date published: 2023-01-13
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 Great Durability!! Bought this 7.5 AH battery and was able to cut an entire yard front and back with 3 light left. I was surprised how little battery was used.
Date published: 2022-10-02
  • y_2023, m_5, d_26, h_24
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.35
  • cp_1, bvpage1
  • co_hasreviews, tv_1, tr_42
  • loc_en_US, sid_312727603, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_ryobioutdoortools