ive had this 50w for like 5 months and i have no warranty or anything because i bought it from a friend. its a genuine one and about 3 weeks ago it would turn off and only fire when plugged into a power source. then it would suddenly start working again. then it would die again. then it worked all last week and about 3 days ago it broke again. Now to have it fire i have to hold the voltage buttons down, and press the fire button really hard to get it to fire. is there any way to fix this?? im getting a new battery in like 3 weeks but i cant go that long without vaping. any suggestions?