The
Trek Verve+ is a little over your target weight at 45-46 lbs., although if you remove the battery, it will drop to 40 lbs. Naturally being a Trek, you won't have trouble finding a service for it as they have the largest dealer network of any company. Other plusses are a Bosch drive system (again very common), and it is a "real" bike with a Shimano 9-speed drivetrain, hydraulic brakes, and quick release wheels. Downside? No throttle. Here is
EBR Review of the Trek Verve+.