Hi derekmeow! First, what type of battery are you using? The reason I ask is that you can harm some batteries by using LR cartos on them...... I am not an expert on batteries but you should not be using LR cartos on a mini e-cig such as a KR808D-1 at 3.7 volts. In general the standard cartos will give more heat/throat hit than LR cartos. The LR cartos will drain the battery faster but produce a cooler draw.