Combines an advanced battery charger, inverter, and automatic transfer switch rolled into one compact device. The engine start and house batteries are charged quickly and efficiently, while the inverter provides silent and clean true sine wave power. This makes it ideal for use with sensitive electronics such as TVs. Charging of up to 2 individual battery banks. High surge rating (2 x continuous) to handle the currents of motor loads, such as air conditioning, when turned on. Multiple features for the marine environment include power sharing, power boosting, and use as an inverter/charger only. Economy mode for low power consumption at no load. Parallel operation with shore generator for more power. 3,750 watts continuous.