Purchased my new QT2L-X and was surprised to see how advanced these things are. I am an old retired electrician but do carry a concealed weapon and felt I needed a tactical light to go with it. Anyway, the light is fantastic (even though I have not quite figured out all the operations yet). Since receiving it I have spent quite a bit of time on the WWW, and this forum, with the main interest of going rechargeable. What I have gathered so far is that I may be best served with a 17670 cell. What I cannot readily determine is exactly what to purchase for battery and charger, and source. Any input would be greatly appreciated. I surely thought eBay and Amazon would be likely vendors but I just cannot seem to put it all together. Thanks very much!