Which smartwatch has the best battery life in 2025?
Conclusion. The smartwatch with the longest battery life in 2025 is Garmin Enduro 2, delivering up to 34 days per charge, 46 days with solar, and 77-172 days in expedition. For non-solar longevity, COROS Vertix 2 holds the crown at up to 60 days. If you need true multi-week endurance, these are the clear winners. Fossil says the Gen 5 can last over 24 hours depending on usage. There are four different battery modes including Daily, Extended, Custom, and Time. In testing, I used Custom mode to turn off specific features when the battery was running low, like Wi-Fi, location, and tilt-to-wake.
Can I replace my Fossil smart watch battery?
Need to change your hybrid watch’s battery? We always recommend visiting the nearest Fossil store to have your battery replaced by a pro to avoid damaging your watch’s internal movement. Find all the related information on our Support Portal by clicking here. Watch Battery Replacements Battery replacements performed in a Fossil store will cost $25. Battery replacements which are mailed in may vary in pricing. If you cannot take the watch anywhere locally, you can submit a repair request to have the watch shipped and the battery changed at our service center.