Garmin says in normal GPS mode, the basic Fenix 7 watches have up to 37 hours of battery life, and this is extended to 46 hours with solar, which is far longer than that on most of the best GPS FREE GROUND SHIPPING ON ORDERS $25 AND UP. fēnix® 6 is a multisport fitness watch with GPS, wrist-based heart rate, Pulse Ox, V02 Max, and a Power Manager to stretch battery life. Price as tested: $599. Starting MSRP: $499. Battery life good for a week with normal usage. 1.2-inch sunlight readable color e-ink display. Outdoor navigation features. Ability to download apps Battery life is good, but not as good as the Fenix 3 HR. The Chronos will last up to 13 hours with an active GPS signal (3 hours less than the Fenix 3 HR) and up to a week as a watch and activity Garmin Fenix 6 Series; Garmin Fenix 7 Series; Garmin Forerunner 45; battery life, weather, and heart rate. On the left, you'll get the time and date. All in all, it's a nice alternative to the Replace a 300 mAh battery compatible with the Garmin Fenix 3 or Fenix 3HR smartwatch. 1.11 Watt Hours (Wh). 3.7 Volts (V). Garmin Fenix 3 and 3 HR Battery. $17.99 Courtesy of mjulianb_ on the Garmin Fenix 3 boards: Fenix 3 HR FCC Filing – Internal Photos and Manual. Hello all. FCC filing spills all the good details on the Fenix 3 HR. Comparison between the two internal chipsets: link to imgur.com. Here are the PDF manual and the new internal and external photos. Manual : link to fccid.io Internal: link You don’t get the same battery-saving modes that you get on pricier Garmin watches like the Fenix 6 series, though it doesn’t seem as essential a feature for the Vivoactive 4. Battery life (or lack of) I got my new fenix 5 two week ago, and the battery life has been pretty poor. I'm only getting 3-4 days between charges. That's with the HR always on and averaging a bit over 40 kms of running per week (so less than 4hrs of GPS). I'm also just using stock watchface. I was expecting much longer battery life than this? Screen, comfort and battery life. As we've mentioned, the screen is one of the main upgrades over the Fenix 2, and the 3.1cm (1.2-inch) 218 pixel-diameter display uses a color system Garmin calls Chroma. It's backlit and is easy to read in sunlight, assuming it's actively tracking something like a hike or a run. 7fh8.