Built for demanding off-grid systems where pure sine wave power quality is essential, the Magnum MS 4000W inverter/charger integrates high-capacity power inversion with a three-step, temperature-compensated charger. The pure sine output preserves the fidelity of sensitive consumer electronics and eliminates the distortion common in less-refined power systems.

A 60-amp transfer relay enables seamless switching between battery and shore power. The integral power factor corrected charger draws 25–30 percent less generator current than conventional chargers, reducing fuel consumption during charging cycles.

• Continuous output: 4,000 watts; Peak: 5,800 watts
• Ampere rating: 33.3 amps at 24 volts DC
• Input voltage: 24V DC (inverter); 60–140V AC (charger input)
• Output voltage: 120V AC
• Efficiency: 93 percent; Total harmonic distortion < 5%
• Operating temperature: -4°F to 140°F
• Remote on/off capability for convenient control
• Thermal protection and LED status indicator
• Dimensions: 13-3/4" L × 12-5/8" W × 8" H
• ETL/cUL and CSA C22.2 No. 107.1-01 certified
• Limited 3-year warranty