I did not read the whole thread
1 - a few people lately have killed Ego
batteries by using 1.5 ohm things on them
2 - if you screw stuff in as far as it can go you will depress the center post of the battery, possibly to the point where no carto or atty will electrically contact the battery post. Stuff (cartos, attys, chargers) should only be screwed on just far enough to electrically contact and work and no further.
3 - based on the above links, CE3 cartos are having battery-killing issues
4 - 510-T auto chargers can kill Ego and normal 510
batteries. Blu (and other 90mah L88b
devices like Trios and Volcano's "Volcano" chargers are reverse polarity as are FS510 models and I think some kind of Ego-J or something like that) and all of their chargers will fry 510's and Egos