Hi Razvan,
I used a Radiospares 185-4654 socket, which sells for one Euro or so. It turned out to be a no-brand Chinese import, you can find the same socket on Epay or other sellers. I could not find this type of socket from "premium" brands, like Keystone and others.
By the way, the same type of battery is sold as "ER14250" by some vendors, and is available from some vendors with leads and a 2-pin female connector. You may also want to investigate this type of solution.
Cheers,
Joel
