GarminEdge 840 GPS Computer(Return to Product Page)

I like every thing about my new 840. It's got so many features I initially had to turn some off or I'd be overloaded with too much data. It's quite an improvement from my 520+ which wasn't holding enough of a charge for long rides. i like the longer battery life and now find I only need to charge it after 3 or 4 rides. The only negative is that the buttons don't seem to engage after clicking them so sometimes I need to hit them more than once.

I picked up the Garmin 840 ahead of a trip to Italy because I wanted the European maps. The 840 has been easy to use and has tracked all of my rides (home and away) flawlessly. The unit synced effortlessly with my Garmin power pedals, my HRM, and my Di2. The data that I am able to access on Garmin Connect, after the ride, is really impressive and it has helped me keep my workouts on track. I love the touch screen and how quickly the 840 responds ' basically, it's ready to go when I am ready to ride. I am very happy with this purchase, and WBW had it at the best price.

I use this for training, gravel riding and road riding. The touch screen, increased memory and battery life are major improvements and the screen setup is better although that could have been made to be updated via laptop rather than on the device. Unfortunately, there are still some maddening Garmin software quirks such as when device is sync'd to a laptop, it locks up and must be hard reset to to work again. it also maintains a menu system that can only be described as archaic.

It seems Garmin is finally getting better at managing devices as a whole. Settings from previous unit are applied like getting a new phone. The management of maps is much easier, but storage is still too limited. I do like the climb pro for all hills not just when you are on a route. I do not know if I would have bought one just for the sake of it, I liked my 830. But it was a few years old and the new units battery lasts so much longer. I never had issues with the touch screen only on the 830 but it is nice that this one has both touch screen and buttons.

I purchased this as on upgrade to the older 520 model. The 840 works really well and provides a lot of useful data while riding and post ride. Works well with my AXS Power Meter and nice to track both heart rate and power real time while riding. Only negative, this could be I have something set wrong, is that when connected to my Garmin headlight it would run the headlight on full power and drain the headlight battery in two hours. Not a huge issue for me. I disconnected the headlight and now it stays on daylight flash mode and last up to eight hours. Nice upgrade, solid GPS and works well with connected devices except maybe the headlight.

This computer has everything I need on the bike. gps is accurate and tracks everything. touch screen makes map easy to use and the buttons make it easy to operate on the bike. Battery also lasts enough for my needs.

This Edge 840 is a very good upgrade to the Edge 520 it replaces. I've ridden with it for over a month and have these observations.

- Battery life is greatly improved, with many more rides between charges.

- Display is larger on a similar sized device, permitting more stats while maintaining readability.

- Touch screen controls easier to navigate than buttons, especially during a ride.

- Improved map details, which includes road and traffic alerts.

- Fewer false incident detection for urban riders. Much of my ride is in urban landscape, with rapid stops that triggered incident detection on the Edge 520.

Between my wife and I, we have owned every version of the Garmin 800 series GPS. When my 810 died I bought an 830 for the front of our tandem bike. When we bought a second tandem for another location, we bought 2 more 830s for the front and rear because my wife, the stroker, also likes to have one. When her 820 died recently after many years we bought her an 840. This one is probably more capable than its predecessors but more complex to program due to the confusing menu system. Not to mention the 3 extra buttons. We don't use most of the available features; just navigate courses given to us on group rides. This unit has way more capabilities than we need, but it does what we need with a nice bright color touch screen and beeps that are louder than previous models, which makes them easier for old ears to hear.

I did a lot of research before buying a "fancy" bike computer. For years I had a simple bike computer that gave me cadence, speed, etc. But, with my new bike, I wanted something with GPS and routing capability. Garmin 840 does all that and a ton more. When it comes to devices, I've been trained to believe that either devices are ultra customizable or they work well. This device somehow manages to do both! It has a massive amount of capabilities and customizations and yet it works flawlessly. For example, it automatically found my SRAM AXS components, bike radar and uploads routes from my phone or computer quite seamlessly.

Highly recommend this

I had an Edge 530 for several years before getting this, and I loved it. Upgraded to the 840 because it was a good price and waiting to spend $200+ more on the 850 didn't seem worth it. This is definitely a good bike computer--it does everything you could ever want and lots of things you'll never want, or even be aware it can do. That said, I knocked a star compared to the simplicity of the 530 because this thing is beeping at me and throwing up ClimbPro screens constantly, and it had a run where it wouldn't wake up without me hard restarting it several times (that seems to have gone away for now). You can change the settings to make it beep less and turn off ClimbPro, yes, but it's so excessive out of the box that I have to point it out. And I liked ClimbPro a lot on the 530, but this thing considers EVERYTHING a climb. Literally, any incline it seems. I actually got lost on a long ride because the computer kept throwing up ClimbPro and the new hazard pop-ups over my navigation as I was going 20+ mph and I had to stop, figure out how to exit back to my nav, turn around, try to figure out where I was going in advance (because when I went back the screen popped back up again), etc. If you can't tell, it got in my head a little. BUT, with all that behind me, this thing is a darn good computer.

I had the 520 plus for several years and finally upgraded to the 840 when the battery of the 520 was only lasting about 4 hours. My favorite features are the touchscreen, mapping, climb pro, and great battery life. Also, I got this when it finally went on sale, so I thought it was a good deal.

The Edge 840 is a really good GPS computer. I purchased this after my Wahoo Roam started being unreliable. The detail and capabilities of the Edge are superior to the Wahoo. I do most of my riding solo and the LiveTrack on the Edge provides much more detail than the tracking on the Wahoo.

The one negative I can think of is that the setup and menus on the Edge and the Garmin Connect app are WAY to complex. It seems like any sort of configuration change on the Edge is buried three layers down in the system menu.

Upgraded from a 520 plus, so of course this will be much better...but it really performs well. Syncs up with all devices easily, and the touch screen works really well. Battery life has been impressive too!

I purchased this to help train for a 100 mile MTB race. I have used it on gravel and road rides so far. I was able to easily connect with a heart rate monitor. The owners manual was of limited help in setting up. Mostly relied on U tube videos to set up. I am pleased with this GPS but since I do not understand and alot of the functions and fields , I am sure I am not gaining all that it has to offer. I am 63 with 8 years of college but I own a flip phone and am technology challenged.

This is a huge improvement over my older Garmin 550. To me the screen size is just right. I wouldn't want anything bigger if you race. I also like that I can use it to control my Wahoo Kickr.

You're a cyclist, but not a psycho cyclist. This thing is great, so much data. Great ability to change the screens. I can't imagine wanting more- either data or ease of use.

I contemplated the Wahoo, but being a boater with extensive experience with garmin customer service, I quite frankly had to stay loyal to the brand. They have always been there for me when I have had issues.

Dove fully into the Garmin ecosystem. I utilize their Rally power meter and this pairs so well with it. Great to have for navigation, you can create routes on the Garmin Connect website and seamlessly upload it to the Edge. I also love the data it provides with my Rally power meter. Great piece of technology for any serious cyclist. The touchscreen capabilities along with buttons make the 840 a better choice over the 540...plus more storage on the 840. It's a little more expensive, but you get what you pay for. It's worth it. Fantastic computer!

Bought to replace a Garmin 830 which had developed a hard fault. Not user friendly. Only reason I didn't return it was that using the app I was able to transfer most of what I needed from my old Garmin. Even now, out riding the screen will suddenly change without me touching anything.

Even more infuriating, I recently did a software update, and it completely changed my personal settings. Have used Garmin bike computers for years. This will be my last one.

Easier to upload routes, stops recording speed and duration of rides when stopped

This little unit gives me more information about my rides, and my body's reaction to my rides, than I ever thought I needed. Reading it all while riding can be dangerous to your health, but viewing it later on your phone or PC, is informative and definitely safer. I especially like that the activity screens (pages?) can be individually created and modified by me, and I'm still modifying them for me after each ride. On the other hand, I'm still wondering about the "elevation" data, even after resetting manually, and the "calories" calculations that don't match my other devices. I'm still learning how the "navigation" features work, and how to follow the maps, but having a clear compass display is surprisingly helpful.