$549.99 when purchased online
Target Online store #3991
About this item
Description
Bring Out Your Cycling Potential with Solar Charging and Extended Battery Life
Take your cycling adventures to the next level with the Garmin Edge 840. Featuring solar charging technology, this cycling GPS computer harnesses the power of the sun to extend its battery life.
Enjoy uninterrupted rides and long cycling expeditions without worrying about running out of power.
The Edge 840's solar capabilities provide peace of mind and keep you connected for hours on the road.
Embrace the freedom of extended battery life and unlock your true cycling potential with the Edge 840.
Dimensions (Overall): 3.4 inches (H) x 2.3 inches (W) x .8 inches (D)
Weight: 1 pounds
Material: Plastic
Warranty: 1 Year Limited Warranty. To obtain a copy of the manufacturer's or supplier's warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869
TCIN: 94188942
UPC: 753759300005
Origin: Imported
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We recommend that you do not rely solely on the information presented. If you have a specific question about this item, you may consult the item's label, contact the manufacturer directly or call Target Guest Services at 1-800-591-3869.
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Shipping details
Estimated ship dimensions: 5 inches length x 5 inches width x 7 inches height
Estimated ship weight: 1 pounds
This item cannot be shipped to the following locations: American Samoa (see also separate entry under AS), Guam (see also separate entry under GU), Northern Mariana Islands, Puerto Rico (see also separate entry under PR), United States Minor Outlying Islands, Virgin Islands, U.S., APO/FPO
item ships from third party seller: PlayBetter
Return details
This item must be returned to any Target store.
This item must be returned within 90 days of the date it was purchased in store, shipped, delivered by a Shipt shopper, or made ready for pickup.
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4.5 out of 5 stars with 334 reviews
840 Synching problems
1 out of 5 stars
jwrigh - 2 days ago
originally posted on Garmin
It has multiple issues with synching. I can see it in history, but it doesn't come over to the phone or laptop. Super frustrating.
Just learning
5 out of 5 stars
Daytona Donna - 8 days ago
originally posted on Garmin
This was a gift and I am just getting started learning the features. So far it has been pretty easy to load a route and save the ride. I need to make the font a little larger or at least define the contrast better. Let me know if that is possible
840 Solar
5 out of 5 stars
Chuckster - 17 days ago
originally posted on Garmin
So far it’s amazing, I just need to get used to all of the features
Great tool to improve training and performance
5 out of 5 stars
Sammmy - 22 days ago
originally posted on Garmin
Compatible with all you bike sensors and gadgets, great tool to maximize, track and improve your rides. Touch screen is a great advantage to toggle between screens during rides. Recommended
Decent bike computer but screen too dim
3 out of 5 stars
OVP_Biker - 22 days ago
originally posted on Garmin
Overall this is a good device with lots of features, but the screen is very dim and difficult to read in either the dark or direct sunlight. The solar charging doesn’t offer much benefit either and the battery drains pretty fast.
I’m keeping it, almost perfect
4 out of 5 stars
shelby t - 27 days ago
originally posted on ExpertVoice.com

*photo is of the the larger 1040 (or whatever #it is garmin, it was unnecessary for me and i prefer the 840). Plan ahead for time to sit down with necessary charging, WiFi, and account login information to setup the device. Once setup - it’s awesome. It lasted 6 days (lots of desert sun exposure) on the solar charging, had at least 6-10 different routes loaded, sharing information/updates/notifications, checking the screens/switching between screens for various metrics during long bike rides…idk how much more I could have been using unnecessary screen time with it, but it never died (#teamamerica). Also it does passively charge in the sun when it’s not in use! I’m keeping mine. Even though I wish it had more options/range for articulating how it sits on my drop bars. It’s not enough to negate the other advantages of it.
As a replacement for my old 540...
5 out of 5 stars
Eric S - 2 months ago
originally posted on ExpertVoice.com

It's probably a no-brainer as to why this was a HUGE improvement! Everything works great, and the additional data has been very useful!
Poor readability
3 out of 5 stars
JimLSeattle - 2 months ago
originally posted on Garmin
Too much white space, poor font makes for inefficient use of screen space. I find this to be much less readable than my Wahoo Roam 2. I've tried optimizing the screen content but can't fit as much useful data on the screen and still have it in a readable format. It's also missing nice touches like coloring gradient, etc.
Cannot connect to Garmin Connect
2 out of 5 stars
PamInAustin - 2 months ago
originally posted on Garmin
I bought this several months ago and cannot get Garmin Connect to recognize my device. I have tried everything…deleting and reinstalling Garmin Connect, installing it on a different computer, buying a different cable. Nothing works.
Buggy and unreliable but great when it works.
2 out of 5 stars
SalemCDB - 3 months ago
originally posted on Garmin
I have had the 840 Solar for about a year now. I feel like I need it for navigating long rides and it is very good to have when it works, but it goes dark, freezes or simply fails to track distance, HR, speed or the other metrics too often to be used as a training tool. Amateurs may find the 840 worth it overall, but serious riders, club riders and fitness enthusiasts need to consider more professional options.
Returned and exchanged for the Edge 1050
1 out of 5 stars
Cyclefanatic - 3 months ago
originally posted on Garmin
Display is difficult to read in the sun. To fix that you have to adjust the backlight settings, which completely chewed through my battery in a 5 hr ride. Also, the Garmin was in the sun during the ride but did not gain any charge.
Great upgrade cycling computer
5 out of 5 stars
JoshF - 3 months ago
originally posted on Garmin
I have owned several Garmin Edge bike computers. I started with the Edge 500 and I was blown away by how much data I could get from a ride on my mountain bike. Since then I have used the Edge 510 and 530 before receiving the Edge 840 as a Christmas present this year. Each release has been a great step forward, but the Edge 840 is significantly easier to use with the touch screen and the refined user interface. I enjoy the hazard and turn warnings and I love being able to use the ClimbPro feature without following a course. This is a great bike computer.
Love it
5 out of 5 stars
Alain B - 4 months ago
originally posted on Garmin
I bought 3 weeks ago and do not disappoint. All features are great, and the touchless screen is fantastic. Great deal.
Works great with the Garmin Varia
4 out of 5 stars
Joshua B - 5 months ago
originally posted on Garmin
I got this to connect with my Garmin Varia radar. It was also an upgrade from the Edge 130 which would always run out of batteries. The Edge 840 Solar definitely has much more battery life, though there was a week that I forgot to turn it off and somehow it didn't automatically turn off and was out of batteries the morning I wanted to go for a ride. Maybe there's a setting on it that I had it turned off to auto shut down, but otherwise it's a great computer
Perfect for me
5 out of 5 stars
Bmay91501 - 5 months ago
originally posted on Garmin
I replaced my old 530. This is a definite upgrade. Touch screen is awesome. Solar charging is…ok I guess. I haven’t ridden long enough to see a real charge yet plus it is cloudy all day here in Michigan this time of year.
Takes getting used too.
4 out of 5 stars
- 6 months ago
originally posted on Garmin
The new interface takes some getting used to but is pretty nice. Seems like updates disconnect some sensors which then need to be reconnected but otherwise it does everything.
it works amazing
5 out of 5 stars
Tait - 6 months ago
originally posted on Garmin
I bought this about a month ago but there is one thing that I cant figure out. I cant figure out how to make it estimate watts. Other then that it is a amazing piece of equipment.
GPS is super accurate but bugs
3 out of 5 stars
CyclingBroStyle - 7 months ago
originally posted on Garmin
First I like the form factor, the buttons and touch screen are awesome UI is fast and routing is great. If I had to do it again I wouldn’t get the solar, the battery gain from solar is negligible, even on 100mi rides. And screen quality suffers from the solar glass. I wish the screen was bigger without increasing the overall shape, there seems like a lot of wasted space in the bezel. Room for improvement: The garmin struggles to sync with the phone after activities I have to close and reopen start and restart the unit multiple times before activities are uploaded. In some case activities aren’t uploaded at all. Other than that I love it it’s better than wahoo or hammerhead.
Same old Garmin issues
1 out of 5 stars
Mark725 - 7 months ago
originally posted on Garmin
Ever since the 520, all Garmin units have had serious connection issues. 530, 830, 540 and now the 840. They all lose connections intermittently during the ride (frequently lose radar/phone etc. connections). After completing rides, they seldom sync without several tries and most often "forcing" a sync several times. Please spend less time on stupid features like pay and group stuff and fix the numerous and well documented connection issues with these units. The display is glossy and hard to see in direct sunlight and the touch screen is basically non-responsive. The solar is a completely useless feature. Again, please just fix the basics of these units first please before offering crap at a higher price that no one needs?
So many features
4 out of 5 stars
RobQ27 - 7 months ago
originally posted on Garmin
This is a great unit. The appealing feature for me was the Solar charging capability. It has so, so many features that, although good to have, is a little overwhelming to get yourself accustomed to it. Initially you have to spend a bit of time turning off and configuring it the way you like it. But the unit works great and the Solar charging is a huge plus.