Taping 2 CR-2032

[silat]

I want to tape 2 CR-2032 batteries together for use in "The Guardian" lights http://www.adventurelights.com/outdoors/products.asp?sid=5&cid=37&ccid=84&S=0&O=5
At about 1:07 in this video you can see the batteries taped together as they come from the manufacturer.
https://www.youtube.com/watch?v=vi2PsBGK3n0
Actually I am not sure it is actually tape that is used.
Anyone know what material is used and how to accomplish this easily?

Thanks

 

[DUQ]

That's heat shrinkable battery wrap. It's available from more popular off shore suppliers like DX and Fastech and I'm sure from US sources.

 

[silat]

Thanks DUQ.

 

[Bullzeyebill]

Moving this to Flashlight Electronics, Batteries Included.

Bill