After one season I had to replace my battery cause it kept turning off the hummer S bike. Tesgo said the battery needed replacing. The gave me $100 off the $600 dollar battery
Since then started working out of town and never used the bike much since.
My wifes bike after 2 seasons under 300 km on the bike her battery is dying within 15 minutes of easy riding.
Tesgo told her that is what happens when your battery gets old. They offered no compensation
I am going to search out a battery from else where seeing tesgo made their sale and are happy with that
The bikes are stored indoors heated year around