Profile: Professional Mariner, LLC is a manufacturer of marine battery chargers. Our products include inverters, fuses, battery isolators, DC monitoring systems, clamp meters, isolator extension cables, galvanic isolators, isolation transformers, binoculars, marine optical lenses and CCTV systems. Our ProTech i-Series features wide range global AC input, user programmable battery type selector and active battery balance control on select models. Our C3 software actively monitors the condition of each battery or bank while charging, to ensure no battery is ever overcharged. our isolation transformer eliminates galvanic current flows and corrosion & it also eliminates neutral drop out.