Cannondale Synapse Neos: How do they achieve that huge Range Per Battery Charge?" I want to get a battery assisted gravel bike and have narrowed my choice down to a Cannondale Synapse Neo 1, a Cannondale Synapse Neo SE, or a Kona Libre EL. There have been no reviews of the Kona Libre (E7000 motor and 504watt battery) and no published average range per charge estimate, but both Cannondale Synapse bikes have range per charge estimates well above other ebikes that I've seen. REI claims they have a range up to 150 miles for the Neo SE 1and 93 miles for the Synapse Neo SE! WOW! Are those numbers accurate?