Inverter/Charger that adapts and manages changing AC demands. The magnum MMS series inverter/chargers are ideal for boats with small to moderate AC demands and limited installation space. Combining an inverter and charger already saves space, but Magnum takes it to the next level. The unique hour-glass shape, low profile and ability to be installed almost anywhere (including upside down) give the MM increased installation possibilities. The pure sine wave AC provides grid quality power and is compatible with any AC powered equipment. A four stage charger safely and efficiently charges battery banks while maximizing battery life. Unique hybrid technology allows the MMS inverters to kick in with grid quality AC from the batteries when the AC demands exceed the generators capacity; the same is true if the boats demands exceed available shore power current. The pure sine power is compatible with sensitive electronics and appliances that use microprocessors. Automatic transfer switch makes the transition from battery power to shore power seamless. When shore power AC is detected, the inverter will immediately transfer the loads to protect the batteries from unnecessary discharge. The switch happens within 16 milliseconds and is hardly detectable by users or equipment. 4-Stage charger with power factor correction efficiently and safely charges flooded, AGM, Gel and Lithium-Ion batteries (with ME-RC or ME-ARC remote control) while maximizing battery life. The charger evaluates battery condition and then cycles through bulk, absorption, float and full charge stages to deliver the quickest charge. Power factor correction ensures all of the chargers capacity is available regardless of AC input. Protection is built in. To prevent damaged to the batteries, the inverter will shut down if battery voltage reached 10V. Over-current and over-voltage protection keep the inverter functioning within its capacity even as demands increase. In dangerously high temperatures, the inverter charger will shut down to prevent a hazardous situation. With 3000W of continuous AC the MSH can provide power to handle larger loads. Ideal for larger boats that have begun to outgrow generator capacity and will provide power for small microwaves, hair dryers and power tools—some at the same time. A 3900W surge capacity handles start