On the side installed batteries there is a chance a rough ride or a call could dislodge it. This strap prevents it. I know. I took a fall on water ice on the left side, and the battery didn’t budge. It was a good bang. I was OK because I kept my hands on the bars and the bike took the shock, not me.

Looking at the structural assembly of the extended battery onto the frame of the bike, there is a high inertial load on the 4 mounting crews down the centerline of the battery load. This creates a pivot point for the battery to rotate on.
The Cinch Strap re-enforces the battery mount, preventing the battery from pivoting side to side. (Don't leave home without it)

Not very happy with the strap it was too short if I didn’t know I had to order two I would have ordered two. Shipping alone cost $20 the strap was six dollars now I need another strap I’m sure if I ordered it it’s going to cost me $20 in shipping again and six dollars for the strap. So needless to say I have not used it. Maybe in the future if I get ready to order something else I will order another strap so they can be shipped together. Thanks

Very Nice bike, I get compliments and jealous stares everywhere I go. A little pricy but worth it!

Quality of product is 1st rate however the cost to ship this small item to me in the US makes a purchase like this to be cost prohibitive