Ok, well maybe semi-permanent. I have a MagicShine light, and I'm tired of having to take the battery pack on and off my bicycle, especially when I'm grocery shopping because I usually stash it in my pannier, then forget to take it out before loading, then have to dig for it in the bottom of my bag. (The light itself is small enough that I can put it in a side pocket.) I'm going to be putting a Wald wire basket on the front of my bicycle, and want a way to mount the battery semi-permanently to the bottom of the basket. I don't need it to be Fort Knox-secure, but enough to discourage casual theft.

Here's a picture of the battery:


I was thinking about a bolted-on metal bracket that goes under the metal pins that you tension the velcro strap around, but whenever I've gone to hardware stores or machine shops to see what they have, they look at me like I have three heads, so obviously I'm not using the correct vocabulary to explain what I want.

Or who knows, maybe there's some sort of lock I could use that would work on object like the battery that I don't know about.