Well I do miss having a manual. The one on line is for a new model, mine is 2 years old. I am also very uneasy about only having one key. I have not found a local locksmith who has a blank to make a copy. As for the bike, without the battery it is about as heavy as my standard bike. I do find it is a bit underpowered. There are 3 levels of pedal assist and I am still learning how to make it up a long or steep hill. It is a learning process.