Mean Well ISI-501-148F True Sine Wave DC-AC Inverter 500W 110V out 12V in with MPPT Solar Charger

The ISI-501-148F is a 500W true sine wave DC-AC inverter with 110V AC output. Its output waveform has total harmonic distortion below 3%, which makes it suitable for loads that need cleaner AC power than modified sine wave inverters provide. It also supports surge power up to 1000W for short startup demands.

Yes. The ISI-501-148F includes a built-in 500W MPPT solar charger, so it combines inverter and solar charging functions in one unit. The listed typical MPPT efficiency is 98%, which is a key differentiator for this model.

This model is specified for a DC input voltage range of 42 to 60VDC. Buyers should confirm their battery system matches that range before selecting this inverter. The unit is also listed for open and sealed lead-acid battery types.

The ISI-501-148F includes battery low alarm, battery low shutdown, over-voltage, over-temperature, output short, input reverse polarity, and overload protection. For overload, it can handle 110% load for 60 seconds before protective shutdown. Several fault conditions recover by re-powering the unit after the issue is cleared.

It is rated for operation from -20°C to +40°C at 100% load, and up to 60°C at 50% load. The design also includes a thermostatically controlled cooling fan to help manage heat under load. Those specs make it better suited to industrial and mobile power environments than many light-duty consumer inverters.

This model is best suited to applications that need 110V AC output from a higher-voltage DC battery system while also benefiting from integrated MPPT solar charging. Typical B2B use cases include off-grid power, mobile systems, backup power assemblies, and field equipment where clean sine wave output matters. Its 500W continuous rating makes it more appropriate for moderate loads than for large AC appliances.

The unit includes built-in remote ON-OFF control, a battery low relay contact, and LED indication for operating status and battery capacity. These features can help with system-level monitoring and controlled operation in equipment cabinets or managed power systems. They are part of the standard feature set for this specific model.

The ISI-501-148F measures 205 x 158 x 67 mm and weighs 2.35 kg. Mean Well lists this model with a 3-year warranty. Those details are useful for product selection where enclosure space and service life matter.