I was changing my battery, and I couldn't figure out how to put the rubber-string-thing back. I see a place to clip it on the right side, but nowhere to clip it on the left side.

Any ideas?

 

There is a clip on the left side as well. Or at least there should be! look a bit closer the rubber string has to be really tight, so look down a long way ;-)

 

My rubber strap was broken in half when I got the Kawi and the F4i, hasn't caused an issue yet. I'm guessing if the bike is at an angle that would cause the battery to fall out of its compartment, you got worse things to worry about