My hope is that this post will help someone who is experiencing the same loose triangle battery bag issue I was. After taking my ebike to work for the first time, I found I was constantly reaching down and pushing the battery back into the center of the bike frame, as the battery had a tendency...
Before:
Specialzed Rockhopper Comp
After:
Swapped out offroad tires for Maxxis Hookworm 29" street tires
Swapped out the original hard saddel for the more comfortable Planet Bike Men's A.R.S.
Added a Topeak MTX to carry my work clothes and laptop
Added BBSHD with 20ah battery from...
This post saved me a lot of time and stress! Thank you automan25.
The only thing I'd add is that in my case a washer was too thick, and sanding it down to the correct thickness (about 1/3 - 1/2 the original thickness) proved to be too difficult. I ended up buying a 26-gauge metal sheet from...