I have been on the first generation of Swytch kit nearly 2 years and it gives me extra power for my daily commute especially there is a long hill climb for me every morning. However, I do think the powerpack size is quite big and I have difficulty carrying my folded Brompton upstairs. I believe Swytch team has heard our voices and developed the lightweight second generation powerpack. Having smaller powerpack helps me to fold the bike without removing it and carry it with ease. Also, the lighter weight helps with the balance of the fold and it does not tip to the right anymore. One of the big advantages is both generations are compatible and I have two powerpacks to use to extend my range. I highly recommend for people who ride the bike to work.