Xantrex Freedom XC PRO Marine 3000W 12V Inverter/Charger

The Xantrex Freedom XC PRO Marine 3000W (model 818-3015) is the marine-specific variant of the Freedom XC PRO 3000 inverter / charger combo. The same compact 3000-watt true sine wave inverter, 150-amp lithium-compatible battery charger, and 50-amp AC transfer switch as the standard XC PRO, but with native NMEA 2000 (CANbus Micro-C) connectivity that lets the unit integrate directly into the boat's marine electronics network. For boat builds where the inverter / charger needs to report status to a chartplotter, MFD, or boat-network monitoring system, the Marine variant is the right choice.

What an inverter / charger does. Two functions in one box. As an inverter, it takes 12V DC battery power and converts it to 120V AC household power so you can run AC appliances, tools, electronics, and HVAC equipment from the battery bank when shore power isn't available. As a charger, it takes 120V AC shore power and converts it to charging current to recharge the same battery bank. The integrated 50-amp AC transfer switch automatically routes loads between shore power and inverter battery power based on what's available. One unit, three functions, fewer parts to fail.

True sine wave AC output is the right output waveform for sensitive electronics, motor loads, and HVAC equipment. Modified-sine-wave inverters cause problems with motors (overheating, premature failure), modern HVAC compressors, microwaves, and sensitive electronics. True sine wave produces clean AC indistinguishable from utility power, which means everything just works the way it would on shore power.

The 6000-watt 5-second surge rating handles motor and compressor starting loads. Compressor loads (RV-style A/C, residential refrigerators, freezers, deep wells) draw 5 to 7 times their continuous current at startup, but only briefly. The Marine 3000W surges to 6000 watts for 5 seconds, which handles essentially every common compressor load you'd expect to run on a 3000-watt inverter.

NMEA 2000 connectivity is the marine-specific feature that distinguishes this from the standard XC PRO. The Micro-C NMEA 2000 connector plugs directly into the boat's existing N2K backbone. The unit reports its status (charge state, inverter output, battery voltage, fault conditions, AC input source) on standard NMEA 2000 PGNs that any compatible chartplotter or marine monitoring system can decode and display. For modern marine builds where the helm display shows everything from engine data to battery state to inverter status in one unified screen, the NMEA 2000 inverter integration is essential.

Third-party monitoring and control system support is the broader integration story. CANbus NMEA 2000 is the de facto standard for marine equipment communication. The Freedom XC PRO Marine plays nicely with third-party N2K gateways and direct chartplotter integration from major marine electronics brands. Set inverter operation modes, monitor charge state, and respond to fault conditions all from the boat's main monitoring interface.

The 150-amp built-in battery charger handles shore-power and generator-power charging. Power-factor-corrected multi-stage charging uses less shorepower per amp of charging current, which means more of your shore-power amp budget is available for AC loads while charging is happening. Bulk / absorption / float / equalize stages with chemistry-specific profiles for lead-acid, AGM, gel, and lithium ion batteries.

Lithium ion battery compatibility is the modern table-stakes feature for marine inverter / chargers. Specific charge profiles for LiFePO4 lithium iron phosphate that match the lower float voltage and absorption profile that lithium chemistries need. Will charge dead batteries down to 0V, which matters because most lithium battery management systems disconnect the battery when it reaches the low-voltage cutoff and a charger that can't engage with a 0V battery can't bring the bank back online. The XC PRO Marine can.

Wide 10 to 18 VDC input range lets the inverter ride through battery sag during heavy loads and high-voltage transients during heavy alternator charging. Most inverters in this class lock to a narrower input range and fault out at the edges, which is annoying when a heavy compressor surge briefly drops bank voltage to 11V or when a high-output alternator pushes bank voltage above 16V momentarily. The XC PRO Marine stays online through both.

Programmable AC under-voltage shutdown (settable from 85 to 110 VAC) is the feature you'll appreciate when running on weak shore power at older marinas or on generator power that occasionally sags. Set the shutdown threshold to match your local conditions. The unit accepts marginal shore power that lesser inverters reject, while still protecting your batteries and loads from the dangerously-low voltages that cause real damage.

Operating temperature range minus 4 to plus 104 degrees Fahrenheit covers the practical temperature range for any marine install, from cold-climate winter use to tropical summer engine room conditions. Full output across the entire range, with no derating in hot weather. The fan-cooled aluminum case dissipates heat efficiently and the active cooling kicks in only when the unit is actually under load.

Bluetooth remote monitoring is available via the optional Bluetooth remote panel (Xantrex part 808-0817-02, sold separately). The remote panel and the matching mobile app give you full configuration, monitoring, and control of the inverter / charger from your phone. Useful for boats where the inverter lives in a cargo bay or engine room and you want monitoring at the helm or in the salon without running additional wiring.

Ignition control lets the inverter turn itself on and off in response to a 12V DC signal from the boat's ignition switch or main battery switch. Standard wiring is to tie the ignition input to a switched 12V circuit that goes hot when the boat's main switch is in the run position. With the boat off, the inverter is off and draws zero current from the bank. With the boat on, the inverter wakes up and is ready to deliver AC power. Useful for boats that don't want the inverter draining the bank during long-term storage.

What this unit isn't. It is not the standard (non-Marine) XC PRO 3000 (the standard variant uses RV-C and J1939 protocols for RV / vehicle integration. this Marine variant uses NMEA 2000 for marine integration). It is not a 24V or 48V inverter (this is the 12V variant). It is not the smaller 2000W XC PRO Marine. For 12V marine installs needing 3000W of clean inverter power with NMEA 2000 integration, the 818-3015 is the right unit.

2-Year Limited Xantrex warranty. Same-day shipping before 3 PM ET on in-stock units.