RMA 510 - $319.95 DSRP


A 21" walk-behind battery-powered lawn mower that delivers the power and run time to handle small to medium suburban yards. Batteries and chargers can be purchased separately or as a set combined with tool.

There’s a lot to love about the RMA 510 battery-powered lawn mower from STIHL. First is its performance. Part of the AP Series, the RMA 510 features a 21" deck for faster cutting than previous models. It’s also convenient – enjoy instant starting, less noise, zero gasoline costs and zero exhaust emissions. The RMA 510 also includes a holding slot for a second battery so you can swap batteries and ...Read More
Print Spec Sheets
RMA 510 Specifications
WEIGHT w/o Battery 28.1 kg. (62.0 lbs.)
w/ AP 300 29.8 kg. (65.8 lbs.)
AREA MOWED Approx. 5,100 w/ AP300 on a single charge
CUTTING HEIGHT 1 3/8 in. – 3 3/4 in.
DECK WIDTH 53.3 cm. (21 in.)
GRASS CATCHER CAPACITY 18½ gallons
POWER SOURCE Battery
WATTS 1,100 W
Batteries and chargers can be purchased separately or as a set combined with tool. *Run times may vary and depend on the battery used, charge level of battery, condition of the grass, and user's operating technique.
Model Features
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    Reduced-Emission Engine Technology - Caring for Nature
    The STIHL Inc. “Caring for Nature” seal identifies its powered products that are more environmentally conscious, producing zero or low exhaust emissions. STIHL Inc. defines “low exhaust emissions” as being cleaner than EPA and/or CARB exhaust emission standards.

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    Battery Life
    No gradual drop in power, so you can work at full speed until battery is depleted.

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    Power Switch
    Instant startup, just push the button and pull the switch lever.

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Important Information
WARNING! Improper use of any power tool may cause serious or fatal injury. Read, understand and follow carefully the operating and safety instructions in your instruction manual before using such products.

STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.
Click to view the STIHL Limited Warranty Time Periods
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Are You Ready for a STIHL?

RMA 510 is rated 4.9 out of 5 by 7.
Rated 5 out of 5 by from Plenty of power and run time Last week I finally purchased the 510 after years of being dissatisfied with any battery-powered mower offering. Stihl has excellent engineering and this mower has a great balance between power and run time. I also purchased the 90R trimmer which uses the same battery. My lawn is only 2,500 sq ft but I can easily trim and mow the entire lawn and the battery (AP300) is still half full. Maybe if I let the grass grow too long it will take more battery life but this is superb. No more cords to wrestle with or gasoline cans to take care of. I'm thrilled.
Date published: 2017-06-21
Rated 5 out of 5 by from Even cut & great battery A couple of weeks ago I wrote a glowing review about my > 2 year experience and regards for my RMA370 mower and my intention to purchase the RMA510. I made the purchase and have just finished my first mowing session with it. My lawn is a little more than 1/2 acre and I am 69. Although I don't see th posting for my earlier review, I would like to make some comments regarding other postings, which can generically apply to any of the Stihl products. Most of the negative comments I have read pertain to the RMA370 not being able to do something for which it was not intended to do. As an example; the instruction manual states that it is not suitable for tall or wet grass, yet some reviewers have listed that as a complaint. How does that apply to this review? Use the right product for the job. When I bought my RMA370, it was the only battery operated mower Stihl made. I knew it had a narrow cutting path and that it would take multiple battery charges to cut my entire yard. I knew to mow frequently enough to not let my lawn get too tall, because the RMA370 was not designed for it. Knowing those limitations, I see no reason to fault the mower. As soon as I found out that the 21 inch RMA510 was available, I knew it would be much better suited to my needs. Now for my review of the RMA510. It does what I expected, by providing an even cut, which is what any homeowner wants. The AP300 battery far surpasses the run time of the AP180 battery. A plus is the fact that my 3 AP180s will also power the RMA510 and the AP300 will power my 4 other Stihl devices (chain saw, edger, hedge trimmer & blower). Is the 510 heavier - absolutely, but that is to be expected of of mower with a significantly wider cutting swath. The steel deck adds a great deal of weight over the non metal deck of the RMA370. The lighter 370 deck has never chipped or cracked, despite stones hitting inside. I wish the 510 decks were made of that lighter material to make it more manuverable. As long as you have a fairly level yard, even if you are an elderly wimp like me, the 510 is manageable. The only other suggestion I would make is for Stihl to offer the same type of blade ("ninja" type, with the split on each end) on the 510 as is an option on the 370. Although a "mulching" blade comes with the 510, it does not have the split at the end of the blade which makes grass clippings very fine. Such fine clippings eliminate the need for bagging and leave no grass clippings behind the mower. Again, this assumes you are not going to let your grass grow too long. Regarding cost. Yes, the initial cost is relatively high compared to a 21 gas mower (spare battery needed if you will follow mowing by using other battery powered devices such as the blower), but no gas, oil, spark plug or other maintenance is required. Plus you are getting a very high quality, reliable product. Very happy with my new purchase of the RMA510.
Date published: 2017-06-01
Rated 5 out of 5 by from Even Better Than Expected! Best thing about this mower is it cuts beautifully. We have a good size yard so a bad cut shows big time. Battery lasted long but I don't remember how long, just kept going on & on. I'm tickled.
Date published: 2017-04-24
Rated 4 out of 5 by from Finally a Stihl Lamnmower that looks like a lawnmower The power is a little less than gas engine (as expected), but not significantly less.The battery life is decent. I cut about 5000 sq ft in 30 min and it makes it on one charge.They really should have added self-propelling, but if you have a relatively flat lot that shouldn't bother you too much.I like the classic look, the earlier models were a little too George Jetson for me.
Date published: 2017-04-13
Rated 5 out of 5 by from Excellent Mower After selling my gas mower in the fall, and researching cordless mowers all winter, I finally narrowed my decision down to two options - The Stihl RMA-510 vs a unit sold at big box stores. The Stihl mower is brand new for this year, and had next to no reviews available, so I knew I was taking a chance; the other mower has been around a long time and has plenty of positive feedback. The main deciding factor came down to two things: 1 - The Stihl brand and associated quality with that brand, and 2 - Parts and service availability of Stihl products.Unpacking the mower was a breeze - fold up the handles and it is good to go. Nothing to it. After fully charging the battery I decided to do a test run on my 3000 square foot yard (it is spring here, and the grass has not yet started growing, so I dropped the deck to the lowest height and sheared off the old growth). I was pleasantly surprised with the power this mower was packing. ECO mode worked as described, but I preferred turning it off and letting it run at full power. Bagging seems to be very good with good suction. I did notice some clippings blowing through between the bag and rear flap. I will keep an eye on this once I am cutting growing grass it I suspect it will not be an issue.Battery life seems to be at least as good as advertised. After about 3000 square feet, I had over 50% charge remaining on my AP 300 pack, so that was a pleasant surprise. I am also guessing that I made the mower work a little harder than it will under normal conditions, so that is promising.
Date published: 2017-04-11
Rated 5 out of 5 by from Best mower we've ever used! We reseearched electric mowers for 2 years and we are thrilled that we waited for STIHL and the RMA 510 mower. We mowed our front and back yards (1300 + sq ft) in less than 1/2 hour and still had 1/2 of the battery remaining. Further, the grass was not completely dry and yet all of the grass trimming were picked up by this mower. I was so impressed with the power, efficiency, sound and performance. I recommend this to anyone that wants the best mower money can by. Thank you STIHL!!!
Date published: 2017-04-09
Rated 5 out of 5 by from Great addition to my battery line of Stihl tools Great mower. Was in at charm engine, in Millersburg, oh and seen this mower. Bought it as soon as I layed eyes on it. I have a tsa 230 9" battery cut off saw and love the power it has. So with two batteries I knew it would have plenty of power. Took it home and mowed the grass and yard is 60'x100' and it mowed the whole yard on a 1/4 % of one battery on eco mode. Great product can't wait to buy more battery powered tools from Stihl. Love the handle grip design also. Makes it easy to hold on too when mowing. And less fatigue.
Date published: 2017-03-10
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