Ryobi 40V 4.0 AH Lithium-Ion Battery OP4040
The RYOBI 40V 4Ah Lithium Battery features up to 2X more runtime than the previous model for an improved user experience. INTELLICELL battery technology features advanced electronics allowing batteries to last longer, think smarter and deliver up to 30% more power. The COOL-CORE design reduces temperature to optimize battery performance and extend battery life. Advanced lithium cells maximize performance and runtime during demanding applications. The robust design and anti-vibration technology increases durability and enhances user experience. This battery features a high visibility LED fuel gauge to clearly indicate remaining runtime. Easily install and remove the battery with the secure quick-release button. Best of all, it is part of the RYOBI 40V system. Charger sold separately.
The RYOBI 40V 4Ah Lithium Battery features up to 2X more runtime than the previous model for an improved user experience. INTELLICELL battery technology features advanced electronics allowing batteries to last longer, think smarter and deliver up to 30% more power. The COOL-CORE design reduces temperature to optimize battery performance and extend battery life. Advanced lithium cells maximize performance and runtime during demanding applications. The robust design and anti-vibration technology increases durability and enhances user experience. This battery features a high visibility LED fuel gauge to clearly indicate remaining runtime. Easily install and remove the battery with the secure quick-release button. Best of all, it is part of the RYOBI 40V system. Charger sold separately.
The RYOBI 40V 4Ah Lithium Battery features up to 2X more runtime than the previous model for an improved user experience. INTELLICELL battery technology features advanced electronics allowing batteries to last longer, think smarter and deliver up to 30% more power. The COOL-CORE design reduces temperature to optimize battery performance and extend battery life. Advanced lithium cells maximize performance and runtime during demanding applications. The robust design and anti-vibration technology increases durability and enhances user experience. This battery features a high visibility LED fuel gauge to clearly indicate remaining runtime. Easily install and remove the battery with the secure quick-release button. Best of all, it is part of the RYOBI 40V system. Charger sold separately.
The RYOBI 40V 4Ah Lithium Battery features up to 2X more runtime than the previous model for an improved user experience. INTELLICELL battery technology features advanced electronics allowing batteries to last longer, think smarter and deliver up to 30% more power. The COOL-CORE design reduces temperature to optimize battery performance and extend battery life. Advanced lithium cells maximize performance and runtime during demanding applications. The robust design and anti-vibration technology increases durability and enhances user experience. This battery features a high visibility LED fuel gauge to clearly indicate remaining runtime. Easily install and remove the battery with the secure quick-release button. Best of all, it is part of the RYOBI 40V system. Charger sold separately.
in 8 offers
The lowest price for Ryobi 40V 4.0 AH Lithium-Ion Battery OP4040 right now is $89.99 at eBay.com.au, compared across 4 retailers.
The all-time low was $35.93 on 9 Sept 2026 — today's price is 150% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 14 Sept 2026.
Last updated at 14/09/2026 11:18:09
For Ryobi 36v 40v Li-ion 8.0ah/6.0ah Battery Bpl3626 Bpl3626d Bpl3640
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Battery For Ryobi 36v 40v 40 Volt Li-ion 8.0ah Bpl3626d Bpl3640
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Genuine Ryobi 36v 4.0ah Battery- Great Runtime Extension For Any 36v
Delivery $18.50
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ryobi 36v 6.0ah 6.0 Ah 6ah Hp High Performance Lithium Ion Battery
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
[OP40201] Ryobi 40V Lithium-Ion - Replacement Electrical Tool Li-ion Battery
Delivery $12.99
RYOBI 40-Volt Lithium-Ion 4 Ah High Capacity Battery | OP4040
Delivery $59.04
Ryobi 40-Volt Lithium-Ion 6.0 Ah High Capacity Battery
Delivery $72.16
RYOBI OP40201 40 Volt 2Ah Lithium-Ion Battery for RY10620 RY40460 RY40250 RY40530 (Tools and Charger Sold Separately)
Free delivery between 23–25 Sept
originally posted on ebay.com
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!!!!
originally posted on ebay.com
The Ryobi OP4040A1 40V 4 Ah Lithium-Ion battery is the best one I've used so far. The power is the strongest and it outlasts older batteries used. Recharging it takes a little longer than 30 minutes. For me, it took a little over an hour to charge. I used it on my lawnmowers (older models) and it barely fits the battery holder. I recommend its purchase. It is excellent in performance and you will notice the difference immediately. I have already purchased a second battery.
originally posted on homedepot.com
I've gone through too many of these batteries to count. They will work less than a handful of times and they stop charging. I've waited for them to cool before putting them in the charger, I've stored them in the house in the ac. I cycle so I don't use the same one back to back. They are just not a good quality battery and has rendered my Ryobi products useless. I have spent well over a thousand dollars just replacing batteries in two years. I have switched to gas power now. :(
For Ryobi 36v 40v Li-ion 8.0ah/6.0ah Battery Bpl3626 Bpl3626d Bpl3640
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Battery For Ryobi 36v 40v 40 Volt Li-ion 8.0ah Bpl3626d Bpl3640
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Genuine Ryobi 36v 4.0ah Battery- Great Runtime Extension For Any 36v
Delivery $18.50
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ryobi 36v 6.0ah 6.0 Ah 6ah Hp High Performance Lithium Ion Battery
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
[OP40201] Ryobi 40V Lithium-Ion - Replacement Electrical Tool Li-ion Battery
Delivery $12.99
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!!!!
The Ryobi OP4040A1 40V 4 Ah Lithium-Ion battery is the best one I've used so far. The power is the strongest and it outlasts older batteries used. Recharging it takes a little longer than 30 minutes. For me, it took a little over an hour to charge. I used it on my lawnmowers (older models) and it barely fits the battery holder. I recommend its purchase. It is excellent in performance and you will notice the difference immediately. I have already purchased a second battery.
I've gone through too many of these batteries to count. They will work less than a handful of times and they stop charging. I've waited for them to cool before putting them in the charger, I've stored them in the house in the ac. I cycle so I don't use the same one back to back. They are just not a good quality battery and has rendered my Ryobi products useless. I have spent well over a thousand dollars just replacing batteries in two years. I have switched to gas power now. :(
Bought this battery to use on a small Tiller attachment for a Ryobi expander Weedeater. Original battery for Weedeater was a 2Ah battery and did not give me much tiller time before I had to recharge. Haven't had an opportunity to use this 6Ah battery, but feel sure it will meet my expectations. Shipping time was a little longer than usual, regulations on lithium batteries.
Ryobi batteries are apparently trash now. Used this less than 10 times in under a year and it shows as defective. My original 10 yr. old battery still works, but wanted more capacity. Don't bother calling Ryobi in canada for support or warranty, they don't call back and the wait times are forever. Found video for reset that looked like it would work, if Ryobi didn't lock out access to one of the screws on cover. Will never buy Ryobi brand battery again, appears they have outsourced.
This is my 3rd Ryobi 40-volt lithium battery and they don’t last, which is crazy considering the price you pay. Frustrated! I love the Ryobi line of Expand-It products and have several accessories-but they all need batteries. We have a large property so battery products work best. Ryobi needs to fix the product flaw or find another provider to make them if they want to retain customers. I do not recommend buying this battery until Ryobi can make a better one to offer its customers.
40V battery - Not Charging only 1 season oldAs a previous reviewer noted - The battery works great for one season, and then when you charge it in a few months, it won't charge. Flashing showing defective battery. - I shouldn't have to buy a new battery every spring!! I have a weed eater and blower. I guess I need to buy a new weed eater and blower which has a battery that will as long as the warranty!! I Registered the product and scanned the receipt - So I called Customer Service line no agents available during noted Monday to Friday hours - so asked for a call back - No call back - now am on hold going on 1 hour. - DO NOT BUY RYOBI- There is no way to access warranty - if they don't answer the phone or call you back. I suggest RIGID as they stand behind their ... More40V battery - Not Charging only 1 season oldAs a previous reviewer noted - The battery works great for one season, and then when you charge it in a few months, it won't charge. Flashing showing defective battery. - I shouldn't have to buy a new battery every spring!! I have a weed eater and blower. I guess I need to buy a new weed eater and blower which has a battery that will as long as the warranty!! I Registered the product and scanned the receipt - So I called Customer Service line no agents available during noted Monday to Friday hours - so asked for a call back - No call back - now am on hold going on 1 hour. - DO NOT BUY RYOBI- There is no way to access warranty - if they don't answer the phone or call you back. I suggest RIGID as they stand behind their products and warranty. Never had an issue with them. No, I do not recommend this product.
I have purchased 3 different Ryobi 40V tools in the last 2 years. A lawnmower for my daughter, a lawn mower for myself and a blower.The tools work great. I own many Ryobi 18 volt tools as well, but my experience with this 40V battery is bad. I have had to replace all 3 batteries in less than 2 years and one of the replacement batteries is already showing signs of failing. It only lasts 15 minutes running my lawn mower. The cost of these batteries is very high and I think I am going to sell these tools and get the Makita lawn mower. My brother has a Makita 36 volt mower and uses his 2 18 volt batteries that run it so he can use his 18 volt batteries he uses for all his other tools and not have to buy another or different battery and he has NEVER had to replace any ... MoreI have purchased 3 different Ryobi 40V tools in the last 2 years. A lawnmower for my daughter, a lawn mower for myself and a blower.The tools work great. I own many Ryobi 18 volt tools as well, but my experience with this 40V battery is bad. I have had to replace all 3 batteries in less than 2 years and one of the replacement batteries is already showing signs of failing. It only lasts 15 minutes running my lawn mower. The cost of these batteries is very high and I think I am going to sell these tools and get the Makita lawn mower. My brother has a Makita 36 volt mower and uses his 2 18 volt batteries that run it so he can use his 18 volt batteries he uses for all his other tools and not have to buy another or different battery and he has NEVER had to replace any of his Makita batteries and some are 10 years old! I hope Ryobi gets their battery situation fixed and starts making batteries as good as their tools.
When I first bought my mower I could mow twice with a 6ah battery. Now it takes a 6ah and two 4ah batteries.I went through a drought for two years and hardly used the mower. Bought the blower and weed whip as well as a chainsaw. Two of the batteries won't even charge now. They last 3yrs and 1 month. I stored them inside the house and followed the directions for initial charging. Batteries are garbage and now I can not mow my lawn. Lot is 133ft by 72ft. Do NOT buy!!!
this battery came with a combo tool kit of a jet blower pack and weed trimmer. bought the combo in 2022 and live on a 1 1/4 acre lot. the weed trimmer used to do the whole property the first season but now the last 1.5 years (23, part of 24) I'm lucky if the battery lasts to do half my yard. its pretty annoying it takes 2 days to weed trim. also when using the blower pack, I'm lucky if I get 20 mins of use to blow leaves etc . i weed trim maybe every 3 weeks and use the blower a few times in the fall. tools are good but the battery life sucks. battery costs around $220 and the combo at the time was low 300's on sale with tax. might as well buy another combo kit for the price of the battery....
