RMA 510 - $319.95 DSRP


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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.)
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 4.7 out of 5 by 13.
Rated 5 out of 5 by from Set up for mulching; no need to install a kit I have used various makes and models of battery powered electric mowers for 20 years. This is by far the best. I was previosly having to stop and recharge the battery halfwaythrough my mowing job. Now I have power to spare.
Date published: 2017-08-14
Rated 2 out of 5 by from Odd Places to Save Weight by using plastic First Stihl product ever and I am not quite convinced that the engineering department thought through the use of plastics or the types of plastics. In the cutting chamber is a hardened black plastic that has cracked and now cut moist grass gathers between the plastic cutting chamber and the steel body. I am envisioning rust forming from the inside out. If the cutting chamber is going to be exposed to the most stress, why in the world would Stihl engineer use plastic? Does not make sense. I am not going to make comparisons with other mowers that I have owned but I've owned mowers for over 30 years. The dealer said they would look at it but implied that the warranty would not cover it if it was from use and something from my lawn caused the crack. I bought a lawnmower not a grass messager / conditioner. I would expect something more robust in construction. The staff at the authorized dealer seem surprised at first that there was plastic in the cutting chamber.
Date published: 2017-08-01
Rated 5 out of 5 by from Sweet mower Have had this mower for a few months now. And the only other mower I will own will be a rider. This mower is great for small yards and tight places. I can actually mow the yard faster with the RMA 510 , than my old craftsman 5.5 hp front wheel drive and 24" cut. And the battery life on eco mode is fantastic. Great job Stihl ! I now have a complete set. Oh and thick tall grass even a little wet. No problem. And bag works great.
Date published: 2017-07-29
Rated 5 out of 5 by from Great Battery-Powered Products! I love this mower! I also bought a Stihl trimmer and blower which all share the same battery. I can trim, mow, and clean up with the blower and still have 1/2 charge left on the battery. STIHL, please make an edger that uses this same battery and I'll buy one of those too.
Date published: 2017-07-28
Rated 5 out of 5 by from Peaceful Naps She didn't even know I cut the lawn! Finally products that make our lives better by offering the peace and Quiet and piece of mind. The ability of the battery powered products meets and often exceeds that of the gasoline powered ones. I am a firm believer and convert. Don't get me wrong, i have a plethora of all the Sthil gas machines. They are great. Now that i bought the RMA510 mower and found its use and ability to be top shelf, i have the Bga100, the FSA90R, theHLA 85 and headed out for the MSA200-C BQ. I still need the power of my Ms880 magnum and others but for the most part I am proud to use clean quiet battery powered units that Sthil has put to market.
Date published: 2017-07-27
Rated 5 out of 5 by from Never heard a DC motor like this before I find the concept of lawns inherently repulsive and mow my back yard expressly to keep ticks and burrs off the cats, so I'm not one to find Zen in the art of routine lawnmower maintenance. This means I really only ever consider electrics, and consumer-grade electrics aren't really built to last more than 6 months--including Stihl's older, smaller models--so I usually try to spend as little as humanly possible. Then I saw the 510 and thought it might actually be worth investing in, so I found a dealer that had one (easier said than done in my neck of the woods) and tried it out. The motor is insane. Even in my mess of overgrown weeds and blackberry brambles, it's so close to the power of gas that I can't imagine anyone other than a professional landscaper really missing much there. It's not the easiest thing in the world to maneuver, but it's not going to wear you out for the rest of the day, either. I can do two passes of my yard (often necessary when it gets too tall) on half a charge, so I personally have no use for the extra battery storage compartment, but I can see it being handy for larger properties. It shuts off almost immediately if you hit something solid--like a chunk of old fencepost--and there's no clumsy reset procedure to go through to get it running again. Just make sure the blade's clear to spin and switch it back on. My biggest complaint is the fact that there is nowhere to safely grab the thing by when it's time to put it away. The handle folds down for ease of storage, which is great because I throw it in a big plastic deck box thing, but it doesn't lock or latch down in any way once collapsed, so lifting it up into said box is far more difficult than it really needs to be. I may just bolt some stainless steel handles onto the deck myself because it's such a nightmare. Overall, I'm pretty happy with my purchase. I'm surprised Stihl isn't pushing these on dealers more than they seem to be as it's leaps and bounds above their older mowers in just about every way, yet nobody's ever even heard of them.
Date published: 2017-07-09
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
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