Why is the istick Rim sold at fasttech different from all of the reviews I've seen? It uses a removable 18650 battery and the USB port is in a different position. Here is the link $51.18 Authentic Eleaf iStick Rim C 80W VW APV Box Mod + MELO 5 Tank Kit - 4ml (28*21.4mm (OD*ID)) / 0.6/0.15ohm / 1-80W / 1*18650 / 28mm diameter at FastTech - Free Shipping