A note about semantics. OP talks about leaking mods or battery devices throughout this thread. Mods don't leak
e-liquid.
tanks do. So don't blame the mods when a
tank leaks. Anything that holds liquid has the potential to leak. There is generally a logical reason why a tank leaks. Its up to the user to learn why and how to correct the situation. Or you can just walk away a return back to smoking...
There are tutorial videos on You Tube that show how to trouble shoot a leaking tank. There are several members here willing to work with you when you are having problems. Just ask.