Delivers full output in invert or charge mode from -4°F to 104°F. Operates up to 140°F or under weak shore or generator power. Offers dead battery charging down to 0 volts. Features include extended surge, power share, equalization and power factor correction. Configurable low battery voltage shutdown and charge algorithm. Designed for recreational and commercial applications. Maximizes flooded battery life.. Power Factor Corrected Multi-Stage Charging: Utilizes less shorepower when charging batteries Built-in 30-amp Automatic Transfer Switch True sine wave 120VAC inverter/charger Battery Equalization | Schneider Electric Solar Inverters Usa Xantrex Freedom XC Inverter/Chargers, 2000 Watt/80 Amp