Garmin Edge 840 / Edge 840 Solar Touchscreen GPS Bike Computer

I recently bought this head unit as an upgrade from my previous Garmin 520, which served me well for many years. It was only until the battery life ran so low, it would barely hold a charge for a 3hr ride that I had to replace it. The new 840 Solar it a definitely a step in several ways: it's a larger screen, so it's easier to see the display, the display is color, which is a nice upgrade. The touchscreen feature is the biggest improvement to me, no more external button sequences to remember to accept or back out of for functions. And of course a much more improved battery life with solar charge allows me to ride all week on a single charge before having to plug it in again. This is one of many Garmin products I own, their quality and support is unmatched! Thank you!

Love the unit, big upgrade from my old 830. But the screen is darker than it should be even with adjusting brightness controls.

I’m coming from a 830 to the 840 Solar. Good: side buttons as well as touch screen. Bad: Solar ‘area’ around the perimeter of screen is dark and makes the entire screen dark. Not sure if the solar aspect is worth it. Otherwise nice update once i got rid of ClimbPro and other invasive features that distract me from riding my bike.

Works as advertised, however the software can get buggy depending on what version of the firmware you're on.

While I love the improved functionality over my Edge 530, the screen is noticeably dimmer and harder to read. So I just returned it and upgraded to the new 850. That screen is fantastic (and a keeper)!

I love this cycling computer and how you can load routes in to follow. The solar recharging is super helpful as well.

I've had a 500, 520, 840, and now the 840 solar. Main use right now is adventure riding so I really appreciate having the solar charging. I've found over the years that all the additional functions that have been added are more of a nuisance than anything so I go in and turn off all the notifications about upcoming climbs, Strava segments, fitness metrics, workout load, etc. Some of those were nice when I was heavy into performance on my road bike, using a power meter, etc. Now it's just plain annoying. I just want to be able to look down when I want info and not have to hear constant beeping, dismiss various notifications, be told there's a hill coming up when I can physically see it in front of me. I'm still rating this unit five stars because all that stuff is available if you want it and you can turn it off when you don't. My favorite two things that I really don't want to be without is my Varia radar unit and the integration with Shimano Di2. As I've gotten older, I enjoy just riding at a more relaxed pace. Just built a carbon Salsa Cutthroat with Di2 and I love that you can use the two extra buttons on the hoods to control other functions via the Garmin. I have it set up right now so that the left hood button skips to the next song and the right button is a play/stop button. I throw a bluetooth speaker in my frame bag to enjoy some music while riding. I don't want to be "that guy" on the trail that disturbs the peace with music when other people are around so as soon as I see someone I can just hit the button on the hood and pause my music until I'm out of earshot of the other people. That all works through the Garmin so now I like the way things work together even more.

The Garmin cycling computers are amongst the finest available. Love this computer!

Garmin computer itself is great but I do not care so much for the solar feature of this computer. I don't feel it charges computer fast enough. Other than that the computer works great and user interface is easy to use. Also its very easy to connect other ant+ and bluetooth devices to be able to get all the data you could possibly need from your rides. Just wish the solar charged more while being used.

Really enjoying all the features the 840 offers. Highly recommended

Excellent device. Has always delivered and works so well for all my different rides

I bought this recently to replace a lost 830. Although it is faster (processing) I don't like it as much. Had a few glitches with it - get prompts that don't allow you to complete what you were doing and at least once, I ended up in a loop that took dozens of tried to get past and shut down the device to start over. I hope I get used to it and come to like it as much as mt 830.

I have had previous Edge models run out of juice on Century rides so solar seemed attractive, but I ride early morning/late afternoon a lot more than all day long and in fading light the screen is too dark. Lots of added features, but none that add huge value

I have been using the Garmin 840 for the past year and a half. I could say there are some good features in this bicycle computer. However, the screen is always hard to read. It's always kind of dark. It is not very clear. That is my only problem with this bicycle computer. One of the things is that if I make it where it's really bright, the battery does not last as much as advertised.

Replaced my Garmin 520, love the 840 solar. Battery life is excellent, especially w/solar technology. Still learning to navigate the screens love the touch screen it is awesome. This product is weel worth the money.

Have been using my 840 for many rides. Past few months the gradient display has stopped working. Uphills with negative gradients, downhills otherwise but not all the time. Cannot find a fix.

Overall a great computer but still glitchy. Grade and elevation are definitely Off. Sensor glitch, I had to do a hard reset and reconnect all the sensors.

I've used a garmin 820 for several years now and have been happy with it. But decided it was time to upgrade so after reading many reviews I went with the 840 solar. My rides are never too long but I thought the solar part would be a good back up in case I was out longer than usual. No issues so far and I'm happy with the purchase! Many thanks Garmin

840 solar is a game changer and in a smaller size computer compared to the 1030 or 40 etc. Love it. Does everything I need and more. Super simple set up from my Garmin profile. Just copied everything from my 530. Simple!

So far so good. Really like some of the new functionality. Still learning and getting used to using the new features