I am enjoying my Swytch bike kit. I installed it myself, which most folks with some mechanical skills can do also. It worked, and continues to work, flawlessly after 3 years of use. I also installed one on my wife’s bicycle, but she rarely rides anymore. (We are both 76 years old) One of the batteries has deteriorated to the point that it only will charge to about 60%. I’m not unhappy about that, as I know frequent charging/discharging are hard on these batteries. I have ordered a replacement battery ( the new style) and I hope these last longer. The only thing I was not satisfied with was the weight of the original battery. They were fairly heavy, and I didn’t care for that. Removing the battery when parking the bike somewhere that wasn’t our home, and carrying them around was cumbersome. That being said, I believe the new style batteries should be more dependable and lighter. For the price of the kit, and if you have a quality bicycle you like, this kit has everything you need to make your regular bike a E-bike.