Where can I get a 16650 rechargeable battery?

Batteries and Chargers Rechargeable Batteries
21

My D25LC2 twisty will work with an 18650 flat top, but I have no idea about the the D25C2.

22

D25LC2 will take 18650 button tops. I tried AW 17650 in both my D25C2 clicky and twisty, but they were too fat. The Sanyo 16650 protected slid right in, no problem.