40V 2AH Lithium-ion Battery

Model: #OP4020A

4.5 | 276 Reviews
Compatible with all RYOBI 40V Lithium tools and chargers, the 40V 2.0 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 2.0 AH Lithium-ion Battery's compact lightweight design is perfect for strenuous landscaping tasks like hedge trimming, pruning and trimming. 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: 2.0
  • Cell Type: Lithium-ion
  • Compatibility: All RYOBI 40V Lithium Tools & Chargers
  • Weight: 2.5 lbs.
  • Warranty: 3 Year Limited


  • 40V 2.0 AH Lithium-ion Battery
  • Operator's Manual


40V 2AH Lithium-ion Battery
40V 2AH BATTERY is rated 4.6 out of 5 by 275.
Rated 5 out of 5 by from 40 v batteries Added to my accumulated 40v batteries to make yard work quicker No waiting for battery to recharge
Date published: 2023-09-08
Rated 1 out of 5 by from Poor quality control. Battery will not hold a charge after only 1.5 years of infrequent use. A second battery has lasted 3 years. Poor consistency in quality control.
Date published: 2023-08-21
Rated 5 out of 5 by from Lightweight Design makes for a great battery I bought this battery two weeks ago to go along with my 6ah and 5ah 40 volt batteries. I’m getting into the 40 volt line of Ryobi products so I figured a lower ah battery wouldn’t hurt especially when using it for my weed eater. I noticed the 5ah and 6ah batteries were making my weed eater top heavy, but the 2ah was exactly what I needed. This is an extremely powerful battery that’s lightweight, and holds a charge longer than expected. I’m impressed.
Date published: 2023-08-03
Rated 5 out of 5 by from Long lasting lightweight battery Love these batteries. For a lightweight 40V battery, they power my yard tools along time! And they recharge quickly.
Date published: 2023-07-09
Rated 5 out of 5 by from Outil très pratique Très efficace pour ce que j'ai à faire chez moi. J'adore!!!
Date published: 2023-06-12
Rated 5 out of 5 by from Lightweight and Powerful. So far so good I used this with the 10 inch pole saw and cut down fallen hanging tree limbs after a recent storm help up fine with plenty of power to cut various limbs ranging from 2 inches to 7 inches at the end of my task which lasted about 20 minutes of cut time still had 2 bars of power left.
Date published: 2023-05-08
Rated 4 out of 5 by from Works well This came with the chainsaw and operated the saw well.
Date published: 2023-03-16
Rated 5 out of 5 by from It fits my chain saw It's the last battery that actually fits my electric chain saw, because my chain saw is an older model. The larger batteries are just 1/4 inch too tall to fit, so I bought 2 of these.
Date published: 2023-03-05
Rated 4 out of 5 by from Its ok. Got it for a Christmas present, wish it had a longer life. I have a good size yard and use the batteries with my blower. I all so have three 3AH and one 4AH and they all get used to blow my leaves. I had a 5AH but it only lasted 2 years.
Date published: 2023-01-09
Rated 5 out of 5 by from 40 volt battery Great extra battery for my leaf blower and lawn mower
Date published: 2022-12-05
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