Hi guys! I've been vaping for a long time. Used different batteries and mods but have run into a problem with my sigelei Zmax V5. I've used a PT3 and now an iclear 30s both are dual coil. When I input my desired voltage or wattage (it takes about 5.2V to really get a good hit) it defaults down to 4.7. The longer I vape, the lower the V goes! Any help, explanations or suggestions would be awesome!!
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