After doing a lot of reading about what batteries to use, (of course after I had already ordered batteries) I am a bit freaked out about using the vamo now. I purchased two Ultrafire 1200 mah unprotected batteries and 1 Panasonic cgr18650cg, now both batteries have worked and actually the ultrafires seemed to work pretty well. I just tried the Panasonic and that works well too, but it's the cg not the ch, so the amp limit is 2.5 instead of 10 like the ch. I was just wondering could I continue to use these until my panasonic cgr18650ch comes along or should I just go back to the twist until then.