Me too, as soon as I could get a 350watt-hours in a 10s3p (about 2 years ago, finally!). My battery is lighter than my motor!docw009 wrote: The Q100 is indeed 4.8 pounds. I've weighed mine. I bought a custom 10S-3P battery and it supports 30 miles of riding. Probably around 3 pounds and fits in a seat bag.