Bangzhao pitches battery-free off-grid inverters for direct PV-to-load power

Zhejiang Bangzhao Electric Co., Ltd. is promoting off-grid inverters that can run without batteries by converting solar power directly to AC loads. The company says the systems are built for remote and weak-grid sites where storage costs, maintenance and transport are difficult.

Why it matters: - The battery-free design can cut upfront equipment costs and avoid battery replacement and maintenance. - The inverters target remote areas where temperature, transport access and service logistics make energy storage harder to manage. - The product is positioned as a direct power option for users that need independent electricity without a public grid.

What happened: - Zhejiang Bangzhao Electric Co., Ltd. said its off-grid inverter series can power loads directly from photovoltaic modules without a battery connection. - The company released product details on October 12, 2026. - The inverters are designed for remote and off-grid applications.

The details: - The inverter converts DC power from PV modules directly into AC power for the load. - Wide-voltage MPPT is built in to improve solar energy use. - Selectable PV input ranges include 100–400V, 200–500V and 400–800V. - The output is a pure sine wave with less than 5% total harmonic distortion. - Supported loads include electric motors, water pumps, compressors, air conditioners, power tools, fans, refrigerators, washing machines, lathes, lighting, control systems and production equipment. - The design uses a power-frequency isolation transformer to separate AC and DC buses. - The inverter includes protections for short circuit, overload and over-temperature conditions. - Product specifications list a service life of more than 15 years. - The startup function offers reduced-voltage startup and variable-frequency startup through the LCD screen. - Output frequency can be adjusted for load requirements, including motor control use cases. - Input voltage thresholds and recovery points can be configured through the LCD screen. - The LCD screen displays input DC voltage, output frequency, phase voltage, phase current, grid bypass voltage, energy output, operating time and fault information. - The conversion system uses SVPWM technology. - Product specifications indicate conversion efficiency above 93%. - The inverter is also compatible with DC inputs from fuel cells, lithium batteries, LiFePO4 batteries, gel batteries, lead-acid batteries, wind turbines and hydro-turbine rectified inputs.

Between the lines: - The pitch is not just about solar conversion. It is also about reducing dependence on batteries in places where storage adds cost and operational risk. - The feature set suggests a product aimed at practical deployment in harsh or isolated environments, not only laboratory performance. - The dual-mode startup and adjustable voltage settings are meant to help the same platform handle different load types and site conditions.

What's next: - Zhejiang Bangzhao Electric Co., Ltd. says the inverter can be used in remote mountain communities, pastoral and border areas, islands, coastal sites, PV pumping and irrigation systems, temporary engineering projects, telecom and surveillance installations, and multi-energy systems. - Users can deploy the inverter in pure PV direct-supply mode or combine it with other DC sources for a more flexible off-grid setup. - The company is positioning the product for users that want to minimize battery investment while maintaining independent power supply.

The bottom line: - Bangzhao is betting that direct PV-to-load inverters can make off-grid power simpler, cheaper and easier to maintain in places where batteries are a burden.