Xantrex Freedom XC 1000 True Sine Wave Inverter/Charger 12V

The Xantrex Freedom XC 1000 is the true-sine-wave inverter/charger combo for boats, RVs, and trucks where the cheaper modified-sine-wave inverters (like the Xantrex Freedom HF line) aren't compatible with the loads being powered. True sine wave is the same waveform as utility AC - smooth sinusoidal voltage that any AC load can use without compromise. Modified sine wave is a stepped square-wave approximation that causes buzz on audio gear, screen flicker on some displays, compatibility issues with sensitive battery chargers, laser printer failures, and outright incompatibility with some medical devices (notably modern CPAP machines with heated humidifiers). For installations where the AC loads include any of these sensitive devices, true sine wave is the right call.

1000 watts continuous, 2000 watts surge. The 1000W continuous rating means the inverter delivers 1000 watts of AC load indefinitely (limited only by battery capacity and the inverter's heat dissipation, which the cooling fans handle). 1000W is enough for typical small RV / boat loads: a small microwave (most under-1000W variants), a coffee maker (most 600-900W variants), a TV plus DVD player and a few small appliances simultaneously, a CPAP machine plus laptop chargers plus phone chargers, small power tools. NOT enough for: a residential air conditioner (typically 1500-2200 watts steady), a hair dryer at full heat (1800W typical, exceeds the 1000W rating), an electric kettle at full power. For higher-load applications, the larger Freedom XC 2000 is the right call.

The 2000W surge rating handles the brief startup current spike that motor loads draw when they first energize. Refrigerator compressors, well pumps, power tool motors, and microwave magnetron startup all draw 2-4x their steady-state current for fractions of a second at startup. The 2X surge for 2 seconds (2000W) lets the inverter handle these startup spikes without faulting out. Without sufficient surge capacity, motor loads either fail to start or trip the inverter's overload protection on every startup attempt.

True sine wave AC output - what that means and why it matters. True sine wave is the smooth sinusoidal waveform that utility AC produces. Every AC load is designed to operate on true sine wave, so true-sine inverters are universally compatible with any AC load. Modified sine wave (the cheaper approximation) is a stepped waveform that has the right voltage and frequency but the wrong waveform shape - this causes audible buzz on audio equipment, screen flicker or display compatibility issues, occasional damage to sensitive electronics, and outright incompatibility with some loads. The Freedom XC's true sine wave avoids all these issues. For installations powering sensitive electronics, medical devices (especially CPAP machines), audio equipment, computers, or any load where the manufacturer specifies pure / true sine wave power, the XC is the right inverter.

50-amp 3-stage battery charger built in. When shore power is connected to the AC IN terminals, the unit operates as a 50A 12V battery charger using a programmable 3-stage charging profile: bulk (high current, fast charge to 80% state-of-charge), absorption (controlled voltage, completes the top 20% without overstressing the cells), and float (maintenance current, holds the battery at full charge indefinitely). Programmable: the charge profile is configurable for almost any battery chemistry up to 18V output, including different voltage profiles for AGM, gel, flooded lead-acid, and some lithium chemistries. Temperature-compensated: a temperature sensor adjusts the charge voltage based on battery ambient temperature, ensuring proper charging in cold and hot conditions.

The 50A charge rate is appropriate for typical 100-200Ah deep-cycle battery banks (10-25% of bank capacity is the typical fast-charge rate range). For larger banks (300+Ah), the 50A rate is conservative but still works - charging just takes proportionally longer.

Built-in 30A AC transfer relay. The transfer relay senses when external AC power (shore power or generator) is connected to the AC IN terminals. With shore present: the relay switches the AC OUT load from the inverter's output to the shore power directly, and the inverter's charging function activates to charge the batteries from shore. With shore absent: the relay switches AC OUT back to the inverter's output, and the inverter takes over powering the loads from the battery. The transition is automatic and meaningful: AC loads continue running uninterrupted across the transfer (no momentary power loss), and the operator doesn't need to manually switch modes.

Dead battery charging down to 0 VDC. The XC 1000 can charge batteries from completely discharged states, down to literal 0 volts measured at the battery terminals. Older inverter/chargers refuse to charge batteries below some voltage threshold (typically 6V or so), which leaves you with a dead battery if the bank discharges past the threshold. The XC 1000 will start charging from 0V and bring the battery back online - meaningful for boats / RVs that occasionally find themselves with a fully dead battery bank.

Power Share function. Power Share is the feature that prevents the combined charging-load + AC-output-load from tripping the shore power breaker. The XC monitors the total current draw on shore power - if the AC loads going through the transfer relay plus the battery charger's draw approaches the breaker setting, the charger reduces its current to prevent tripping. Useful for boats / RVs at older marinas with 15A or 20A pedestals where running the full AC load plus full charging would otherwise trip the breaker.

Battery equalization for flooded lead-acid. Equalization is the controlled overcharge cycle that drives the gassing needed to mix electrolyte stratification and clean the lead plates of flooded lead-acid batteries. The XC 1000 supports a manual equalization mode that you can run periodically (typically every few months for boats / RVs in regular use) to extend flooded battery life. Don't run equalization on AGM or lithium batteries - it would damage them. The XC's equalization is a manual user-triggered mode, not automatic, so you control when it runs.

Wide 10-18 VDC input range. The XC accepts 10-18V DC input - covers the standard 12V battery operating range plus the higher-voltage alternators (15-16V) on some modern vehicle chassis. Standard 12V inverter/chargers may shut down or behave unpredictably when input voltage exceeds 14.5V, which can happen on RVs and trucks with sophisticated regulated alternators. The XC's wide input range avoids this issue.

Programmable AC under-voltage shutdown 85-110 VAC. For installations where shore power voltage frequently sags (older marina infrastructure, generators with marginal regulation), the XC lets you set the under-voltage shutdown threshold anywhere from 85 to 110 VAC. Below the threshold, the unit disconnects from shore power to protect AC loads from undervolted operation. Above the threshold, normal transfer operation. The programmable threshold lets you tune the trip point for your specific shore power conditions.

Ignition control input. The 12V ignition control input lets you tie the inverter's enable signal to the vehicle ignition switch (or to a manual switch on a boat). When ignition is OFF, the inverter is fully disabled (zero AC output, minimal standby current draw). When ON, the inverter is active. Prevents the inverter from accidentally drawing the battery down overnight, and minimizes inverter standby current losses during long-term storage.

Operating temperature range -4 to 104 degrees F. The XC 1000 delivers full rated output across the typical recreational marine and RV temperature range - cold-weather northern boating in early spring / late fall, hot-weather Gulf coast summer use, RV use in any continental U.S. climate. Many cheaper inverters derate at temperature extremes. the XC is rated for full output across the wide range.

Hardwire AC and DC connections with quick-connect terminals. The AC IN, AC OUT, and DC connections all use hardwire terminals (no plug-in cords). The quick-connect terminals at AC IN / AC OUT make installation faster than traditional screw terminals - snap the wire into the terminal block, lock the retention tab, done. The DC connections use marine-grade studs sized for typical 4 AWG to 1/0 AWG battery cabling.

Install. Mount the chassis on a flat surface in a well-ventilated location near the battery bank. Connect 12V battery cables (positive through a 200A T-class fuse, negative direct to battery negative) using 4 AWG cable for the typical 1000W install. Connect 120V AC shore input to the AC IN quick-connect terminals (hot, neutral, ground per shore wiring). Connect 120V AC distribution to the AC OUT quick-connect terminals. Connect the ignition control wire to the vehicle ignition / boat keyswitch. Wire the temperature sensor to the battery bank for compensated charging. Total install time is typically 4-6 hours for a competent boat / RV owner.

What's NOT included. Battery cables (sold separately - 4 AWG marine-grade tinned cable for typical installs), DC fuse / breaker (200A T-class on positive lead near battery), the AC distribution panel and circuit breakers, and any subpanel hardware needed to integrate the AC OUT into the boat / RV's existing AC distribution.

Two-year limited warranty. Standard Xantrex warranty terms apply. Service runs through the Xantrex authorized service network.