In an off-grid solar system, your solar panels charge your deep-cycle batteries instead of powering your household loads directly. So in off-grid solar systems, it's the inverter's job to convert the DC power from your battery bank into AC power for your home's electrical loads.
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In addition to converting DC to AC power, many off-grid inverters can also assist in charging your batteries from an AC source like a generator. An inverter with this feature is referred to as an off-grid inverter/charger.
For battery-based renewable energy systems, our pre-wired inverter systems save time and hassle by combining the inverter, charge controller, and other key components together - all pre-wired to NEC standards for a single turn-key installation.
These days, most off-grid inverters - and all grid tie inverters - have pure sine wave output. While a bit more expensive than models with modified sine (or "square wave" output), pure sine wave output is needed for 100% smooth operation of all of a modern home's electrical loads. There are still some applications where modified sine waveform output is acceptable, but for most battery-based solar power systems we recommened using an off-grid inverter with pure sine wave output.