Expecting my first mech mod & rda set up via mail. I've watched a few videos on battery safety. Will be picking up some sony vtc4 or vtc5 batteries. I also have an ohm reader included in my package. I'm new ECF & want to learn the safest way to vape on. APV set up. Has anyone ever had a battery blow up on them & is there any reported deaths due to battery explosion using a mech mod??