Square Design Series
Our Square Design Series inverter-chargers are low-frequency, transformer-based systems engineered for reliable, high-performance power delivery. The SD Series features a rugged, non-corrosive exterior cabinet, internal ventilation fans for effective heat dissipation, heavy-duty fittings, and a durable plastic assembly. It includes a GFCI outlet and a terminal block for hard-wiring AC input and output. A programmed algorithm controls the four-stage battery charger, from bulk charge to trickle, ensuring efficient battery management. The SD Series operates at 120VAC or 240VAC at 60Hz and is available in 12VDC or 48VDC input.
More Info On Our Inverter-Chargers
Ultimate Power inverter chargers are low-frequency pure sine wave inverters designed for reliable performance. They convert DC to AC power using a combination of a transformer, circuit boards, and transistors to produce a pure sine wave—delivering a cleaner, smoother signal compared to modified or quasi-sine wave inverters. Ultimate Power inverters seamlessly power any AC equipment you would typically use on the grid, from microwaves and computers to battery chargers, compressors, and hydraulic pump motors—all without buzzing or equipment failure caused by poor sine wave output.
As low-frequency inverters, they can handle up to three times their nameplate rating for 20 seconds to accommodate motor startups (provided proper wiring and battery capacity). Additionally, our inverters feature a standard 12V remote on/off control via a wired 12V switch to the terminal block, allowing control from the cab, a vehicle start signal, a timer, or a remote switch. We also offer remote control options for added convenience.