Greenworks PRO 80V 4.0Ah Lithium-Ion Battery ((Genuine Greenworks Battery / 75+ Compatible Tools)

Awesome! It worked great! I used it today. I did the job and still had 2 bars left on my battery. Easy to use. Speed of charging is great. It fit in my 80 Volt green works lawn mower just fine. It was compatible. Weight is not too heavy. Very highly recommend! I love it!

We have a 40V push mower and bought this as a replacement battery. I was concerned when it arrived as it is longer than their standard 80V battery. It still fits inside the battery holder of the mower just fine and we are looking forward to the extra capacity of this battery. Went with the Greenworks name brand battery after reading some the disappointed reviews of the after market batteries. This is a great battery for stationary equipment like the mower. It is also quite a bit heavier so I don't think I would use it in a tool you have to carry like a weed wacker or blower.

I use this as a backup battery for the Greenworks Leaf Blower 80V/ 170MPH/ 730CFM which I can’t review here bc I didn’t buy it on Amazon. But the blower and battery are awesome. I got the blower as a Costco special that came with the battery and charger and then bought this to have charging while I use the other one. I have no less than 20 mature white oak trees on half an acre and this pair has cut my yard work in half in terms of time and labor. The blower will move anything you need, wet or dry; leaves, sticks, cats, raccoons, small children. I think this battery actually lasts longer than the one the leaf blower came with from Costco even though the specs said it has a shorter run time. As for the people complaining that the blower was too heavy with the battery, idk what they’re on about unless they’re 5’ tall or elderly. I’m a 5’9 woman not in the best shape and I can carry that thing around for hours. My moms purse weighed more and I used to have to pack that around for her in the mall. Anyway, very happy with the battery. 5 stars.

This battery is longer than normal and doesn’t fit the same. I can use it in my mower but the lid cover doesn’t close. Fits ok (clicks in) in blower and weed trimmer but sticks out a bit awkwardly. Odd to me that on top of having so many voltage lines of batteries, Greenworks also has varying sizes for same voltage.

Likes: Fair price, good performance, no cords, no gas. Dislikes: Charge time Currently using the 4 AH battery in the 80V Greenworks Pro leaf blower. Also have the 80V String Trimmer and expect awesome performance with that tool next spring. Leaf blower runtime with 4 AH battery: 35 minutes (at 85 degrees F outside temp) Used the "boost" button for maybe 60 seconds total. Comparison: Using 2.5 AH 80V battery, same conditions, got 17 minutes run time. On a 40 degree F day, 2.5 AH battery ran 23 minutes so expect even more run time from the 4 amp battery as the temps drop again. The 2.5 AH battery runs for 30-40 minutes in warmer weather with the string trimmer, depending on how thick the weeds are. I expect 60-70 runtime with the 4 AH battery on the string trimmer. Charge time 4 AH: From fully depleted to full charge, about 50-55 minutes. The 2.5 AH charges in about 25 minutes for comparison. I actually think that's a better runtime to charge time ratio. I just purchased a second 2.5 AH battery because the runtime to charge time ratio is better. I might have to swap them frequently, but there will always be one fully charged by the time one runs out. You might think that sounds like a hassle but compare swapping a battery to mixing oil and fuel, pull starts, or dragging a cord around the yard. You will not be disappointed with Greenworks 80V batteries.

Perfect replacement battery!

I bought a Greenworks lawn mower in May 2025. The battery that came with the unit could not mow my 1/3 acre lot. I bought this "extended run" unit as a spare battery later that same month. The battery was expensive; discount alternatives were readily available. I chose the Greenworks battery in part because of the promised 3-year warranty. The battery performed exceptionally well throughout 2025 (essentially June to October). It easily handled my lawn on a single charge and left plenty of power for the next mowing. The battery's performance this year (it's been in service since late April) has degraded noticeably. It cannot completely mow the same lawn that it easily handled last year. Indeed, the small "original equipment" battery that came with the mower outlasts this "extended run" unit. I contacted the company for their promised 3-year warranty support. They wanted the serial number of the battery (a fair request), the model number of the battery (an odd request since that should have been apparent to them from the serial number), and both the model number and serial numbers of the lawn mower (requests that made me realize the likelihood of resolving the matter was zero). The rep mentioned they would also need the charger's serial number. When I balked at these extra requests, the rep warned me they would want to test and evaluate the battery's capacity. She cautioned that their assessment of my case would also entail a review of my lawn's grass density and hilliness. She ignored my description of the battery's diminished capacity. She also ignored my two requests that she pass me to a supervisor. This is a premium-priced product. The level of company support isn't worthy of a discount seller. BEWARE of purchasing this product and, given my experience, anything else from this company. The lawn mower performs well (at the moment), but when the batteries run down, or when the lawn mower itself breaks down, I will not buy from Greenworks again.

I have been using Greenworks tools (mower, snowblower, leaf blower, weed whacker, hedge trimmer, chain and pole saws) since 2018 and have very few negatives. If I could have changed anything, I would have purchased a 4ah battery sooner. Previously, I had three 2ah batteries, and found that with the lawn mower, I was using all three on a relatively small lawn (1/3 acre) and about the same with the snowblower (2100sf driveway.) My advice for anyone buying a tool for the first time would be to have at least two batteries on hand. Ideally, I'd recommend one 2ah and another 4ah. The 4ah lasts twice as long, but is also much heavier and may not work in all tools due to its additional 1 3/4" of length. It does fit in all the tools I own, including the chain saw. The extra weight is not noticeable in the mower and snowblower, but I would not want to lug around that weight in any of the hand held tools, especially the weed whacker which is already fairly top-heavy. I typically am able to use the weed whacker and the leaf blower with a single 2ah battery charge with no issues, so the extra run time of the 4ah isn't a factor.

Good quality. Once fully charged, it can last quite long. Very satisfied.

Larger then the standard size but fit in my blower (works perfectly) and most likely my snow blower (haven’t checked the snow blower yet)

excellent battery .. gives a much longer use before it needs to be recharged than a 2.0 AH battery..much heavier than a 2.0 AH.. Only downside of this is using it in leaf blower

Very happy with this battery purchase. It definitely has much more power storage than the original 80V 2.0 Ah batteries and works really well. Fits the original charger without any problem and pops into our lawnmower without any issue. (The cover still closes). Be aware though that it is definitely a few inches longer than the original batteries. This could affect balance on certain shoulder/hand held items such as weed eaters. For lawnmowers and snowblowers though it's definitely a great upgrade.

Bought this battery because the battery that came the snow thrower keeps running out of power clearing my double wide driveway. I have to recharge it at least up to 3 times to clear the driveway. So far this battery has cleared up to 3 inches of snow on a single charge. It ran out of power when the snow was 4 inches deep and I had about 5 minutes worth left to go.