ProMariner TruePower Plus 1500W Modified Sine Inverter

The ProMariner TruePower Plus 1500W is a modified sine wave inverter with a 30A transfer switch, GFCI outlets, USB and an LCD message center.

Fifteen hundred watts of modified sine wave sits between the 1200W and 2000W units in the same range, and the wattage choice is straightforward. The waveform choice is not. Modified sine wave suits tools, heaters and resistive loads but makes motors run hot and buzz, and some chargers and electronics refuse it entirely.

The integrated 30A AC transfer switch automatically supplies incoming shore or generator power to the connected loads when it is present. So the outlets stay live whichever source is available, without anyone switching between them.

Soft-start filtered technology and double-rated surge capability handle equipment with higher startup demand than its running draw. A dual-color LCD message center shows AC output and DC battery input, with GFCI outlets and a USB port, and a separate On/Off remote on a nine-foot cable is included. Explore more power inverters.

• 1500W, between the 1200W and 2000W models
• Modified sine suits tools and heaters, not everything
• Motors run hot and some electronics refuse it
• 30A transfer switch keeps the outlets live