Garmin Edge® 1040 SolarNever stop cycling with the ultimate solar powered GPS bike computer you can depend on when you need it most. is ready for any ride, from remote gravel trails to epic climbs. The Power Glass solar charging lens extends battery life, giving you up to 100 hours in battery saver mode or up to 45 hours in demanding use cases. During daytime rides, it adds up to 42 minutes per hour in battery saver mode and up to 20 minutes per hour in demanding use