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

This model is a 500W true sine wave DC-AC inverter designed for applications that need 110V AC output from a 42-60V DC input source. It is also differentiated by its built-in 500W MPPT solar charger, which makes it suitable for off-grid or battery-based power systems that benefit from solar charging support.

The ISI-501-148U provides a true sine wave 110V AC output with total harmonic distortion below 3%. That makes it a better fit for loads that require cleaner AC power than modified sine wave alternatives.

This model accepts a DC input voltage range of 42-60VDC. Buyers should match it to systems built around that input range rather than lower-voltage DC platforms.

Yes. The ISI-501-148U includes a built-in 500W MPPT solar charger with typical MPPT efficiency of 98%. That adds charging capability within the same unit instead of requiring a separate standalone MPPT charger for comparable solar input handling.

This inverter is rated for 500W continuous output and supports surge power up to 1000W. That can help with loads that draw a higher startup demand than their normal running power.

The ISI-501-148U includes battery low alarm, battery low shutdown, over-voltage, over-temperature, output short, input polarity reverse, and overload protection. For overload, over-temperature, and output short conditions, the unit shuts down output voltage and requires re-powering to recover.

It is rated for operation from -20°C to +40°C at 100% load, and up to 60°C at 50% load. Buyers using it in warmer enclosures or harsher ambient conditions should account for that derating behavior.

This model is specified for open and sealed lead acid batteries. Buyers comparing battery chemistries should use that stated compatibility as the baseline for this unit.