i just recieved my 2xaa black box mod from e liquid planet but it was made by mad vapes any way i am using trustfire 14500 batteries question how long do you guys get out of them i feel like they die quickly because my first one just died and i fully charged it till about 5 pm and it jsut died is that normal? My ego 1000 mah batt seemed to last my a lot longer maybe that was because i also had a 650 mah passthrough to use? i dont know im confused is 8 hours good life this battery? please let me know