I'm going to be getting a Romisen RC-N3 CREE Q5 LED soon and thinking about using it with CR123A batteries but I'm not sure which ones to pick up. I want to use rechargable and I'd prefer a charger that will do at least 2 at a time. Any suggestions?

Also, I'm wondering how long these batteries will hold a charge. I usually charge everything on the weekends for the week ahead. I want to get at least an hour of usage out of a week old charge. Will this work with these batteries?