I just want to reply because I didn't see a good answer to his question. A mech mod has no protection. The weak link in a mech is the battery. When you have a regulated device, whether its VW or VV there is usually protection to keep you safe. Even when using a kick there is some protection. Now the reason for a mech is that there is no amp limit. There is nothing that's going to cut you off and say hey this isn't safe. Most regulated devices might let you go to 14-15 watts of power. DNA 20 let's you go 20 watts. With a mech in sub ohm area you might be doing anywhere from 25-50+ watts. If you aren't completely aware of what kind of battery you have. What it's amp limits are, the ohms of the coil, and other variables, the battery can fail. If this happens it might just vent toxic gas or worse case scenario you have a pipe bomb in front of your face. This is why you should not move into mechs until you understand what you are doing. A 45 watt vape is very enjoyable but until you are willing to do some research and are comfortable with building coils of a certain ohm consistently, stick to regulated devices. Much more safe and very satisfying as well.