I am going to be making a purchase, because I got my wife a v4l battery, PT, and PCC. She loved it. Ditched her chuck immediately. The problem is she gets a headache every time she used a carto. I assume it is a pg allergy. Now with the vg cartos she wants to start using it again. She needs another battery though. I was looking as the XL. Does this fit in her PCC? That is a must because she loves it. Just wanted to make sure before buying it. Thanks.