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4.7

359 product ratings

313 users rated this 5 out of 5 stars
24 users rated this 4 out of 5 stars
6 users rated this 3 out of 5 stars
4 users rated this 2 out of 5 stars
12 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 321 reviews

by nathatod6
Sep 03, 2021Top favorable review
High quality, brand new
I've used the new battery numerous times now and it has been terrific. I had an old battery that wouldn't get me through my yard without recharging it 1-2 times and now I don't have stop a single time. Ton of time saved for me! I knew I didn't need to pay for a brand new mower altogether so I'm thankful this battery has been getting the job done for me the past couple months now.
Verified purchase: YesCondition: New
by jjatpac_3
Jun 08, 2021Top critical review
Flawed, but useable.
This was much cheaper than Amazon or Home Depot. Now, I think I might know why. When I tried to charge it, I couldn’t slide it all the way onto my charger. Fortunately, I had a second charger, which was the same model as the first charger. The battery slid right into position and charged as it should. I suspect that these batteries are “seconds”, in the sense that they have some slight manufacturing defect or out-of-tolerance dimension which disqualifies them from regular sale. Otherwise, why would it fir on one charger, but not on the other? It’s a great price. I would take the chance again.
Verified purchase: YesCondition: New
by dgshop.54
Jul 23, 2022
Good battery
I bought a Ryobi 40v trmmer to replace my Ryobi 4-cycle gas trimmer, simply because I was tired of pulling the rope, adjusting the choke, and changing the spark plug. Bottom line, I love it... but you definitely need a back up battery. This one fits the bill. There are some off-brand batteries out there, but I always stick with, and recommend OEM. A rapid charger is also a good idea.
Verified purchase: YesCondition: New
by cuggle-44i49ujv5
Feb 27, 2022
Ryobi 40V Lithium Battery
My current Ryobi batteries are getting where they no longer will maintain a charge. After the initial charge, new battery has made my mowing job much easier. Product is as advertised. Glenn
Verified purchase: YesCondition: New
by thang111
Mar 18, 2022
Working as advertised.
Had to return a Ryobi 40v battery and replaced with this one. 1st one lost ability to charge after only a couple of weeks. This is still charging after a few times of use. Don't expect problems. Have tried off brand with little success.
Verified purchase: YesCondition: New
by elizgar_6244
Sep 27, 2022
Great Deal
The 40 volt battery arrived on time and fully charged. I used it in my weed wacker the same day. It lasted as long as a brand new one at 1/3 of the price.
Verified purchase: YesCondition: Pre-owned
by rustydog50
Jun 09, 2020
Great battery but don't store them for an extended time in the charger
Great ryobi battery that I got for a great price. One of my ryobi lithium batteries became defective after spending the winter in the charger. So I recommend not leaving them in the charger for an extended period of time.
Verified purchase: YesCondition: New
by elvisonstage
May 08, 2024
A PERFECT RECHARGEABLE BATTERY AT LESS THAN HALF STORE PRICE!!!!
My wife and I were so excited when I saw the Ryobi 4AH 40v Lithium Ion Battery OP4040A1 w/ On Board Fuel Gauge & Manual, BRAND NEW IN THE FACTORY SEALED PASTIC PACKAT, AT LESS THEN HALF THE STORE PRICE ON EBAY!!!! Retail-Dealz-llc has a GREAT FEEDBACK RATING and even one of the retail employees encouraged me to buy these, and I bought TWO of the batteries!!!! Received the batteries SUPER-FAST , charged one of these batteries and my wife weed-eated the whole yard WITHOUT the battery going dead!!!! To me, THAT'S a GREAT BATTERY!!!! Next time, she used the other battery and THE SAME RESULTS!!!! RETAIL-DEALZ-LLC IS A FANTASTIC EBAY SELLER!!!! We LOVE THE BATTERIES AND THANK YOU!!!!
Verified purchase: YesCondition: New
by vintagevmax
Oct 07, 2020
O.E.M. Only !
Buy only O.E.M. Ryobi batteries these work like they should unlike the no name brand copies which do not have the voltage necessary.
Verified purchase: YesCondition: New
by perfectworld_59-3
Sep 08, 2020
Is very easy to recover 80 % of elements !
Open the battery, charged all 20 samsung 18650 elements, with a 12 volt battery and i can use now in my ryobi landmore and i can recharge with original charger, working time on my 40 v landmore about 20 minutes. With 3 battery i can do the job around my house ! At this price is a good deal !
Verified purchase: Yes

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Ryobi OP4040A1 40V 4Ah Lithium-Ion High Capacity Battery

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Ratings and Reviews

Most relevant reviews

High quality, brand new

Flawed, but useable.

Good battery

Ryobi 40V Lithium Battery

Working as advertised.

Great Deal

Great battery but don't store them for an extended time in the charger

A PERFECT RECHARGEABLE BATTERY AT LESS THAN HALF STORE PRICE!!!!

O.E.M. Only !

Is very easy to recover 80 % of elements !

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