The Eleaf iPower is powered by a long lasting 5000mAh built-in battery which is designed to last all day. The Eleaf iPower features a sleek and smooth finish which is both comfortable to hold and aesthetically pleasing. The maximum output of this device can be reached up to 80 watts. The Variable Temperature Control system offers support for Nickel (Ni), Titanium (Ti), and Stainless Steel 316 (SS316) coils. The Eleaf iPower also features Bypass, Smart and Temperature Coefficient of Resistance (TCR) modes. The Eleaf iPower features a dual circuit protection which applies over-charging, over-current, and over-discharging protections. This device may be charged and also download future firmware updates via the Micro USB Port.