Meet the HES 3–6KL: A Smarter Way to Power Your Home

As the global energy transition accelerates, the role of home energy systems is evolving. What was once simply a backup power solution is becoming an intelligent energy hub—one that generates, stores, manages, and uses energy more efficiently.

Built around the evolving needs of modern households, Hypontech introduces the HES 3–6KL Low-Voltage Hybrid Energy Storage Inverter, designed to bring greater flexibility, efficiency, safety, and control to residential energy systems.

So, what makes the HES 3–6KL stand out? Here’s everything you need to know.

Powerful PV Performance: Capture More Energy, Even in Challenging Conditions

• 20A Max. Input Current | Ready for High-Power Modules

With a 20A maximum input current, the HES 3–6KL is compatible with mainstream high-power PV modules. Supporting up to 200% PV oversizing, it enables homeowners to make better use of available rooftop space and capture more solar energy throughout the day.

• 70V Low Start-Up Voltage | Start Earlier, Stop Later

Solar generation doesn’t begin and end at midday. With an ultra-low 70V start-up voltage, the HES 3–6KL can start generating earlier in the morning and continue operating later in the evening—even under low-light conditions.

More operating hours mean more opportunities to turn sunlight into usable energy.

• Shadow Scan | Maximize Energy in Complex Rooftop Conditions

Partial shading can significantly affect PV performance. The built-in Shadow Scan function helps the system identify and track the optimal operating point in complex shading conditions, helping minimize energy losses and maximize overall system yield.

Smart Energy Ecosystem: PV, Storage, EV Charging and Backup Power—Working Together

A modern home energy system is no longer just about generating and storing electricity. It is about intelligently managing where energy comes from, where it goes, and when it should be used.

• Smart Load Management | Prioritize What Matters Most

The HES 3–6KL introduces a Smart Load function that gives homeowners greater control over their energy consumption.

Users can assign different priorities to household loads and set battery SOC thresholds according to their needs. When the battery falls below the predefined threshold, the system can automatically disconnect non-essential loads while prioritizing critical appliances.

This helps optimize energy use, preserve battery capacity, and keep essential loads powered when energy is limited.

• PV + Storage + EV Charging | One Energy System, More Possibilities

As electric vehicles become increasingly common, home energy systems are evolving from simply “generate + store” to “generate + store + use.”

The HES 3-6KL connects directly to EV chargers, allowing the green energy generated on your roof to power both your home and your car. One system, endless energy applications.

• Diesel Generator Support | Extra Backup When You Need It

For areas with weak grids, no grid coverage, or strict continuous power requirements, the HES 3-6KL features a dedicated GEN port for diesel generators.

When PV generation and battery capacity are insufficient to meet demand, the system can automatically switch to generator power, creating a flexible PV + battery + generator multi-energy system for greater power continuity.

Built-In Safety: Seamless Switching, Multiple Layers of Protection

• <3ms Seamless Backup Switching | Keep Critical Loads Running

Power outages shouldn’t mean interruptions to everyday life.

With a switching time of less than 3ms, the HES 3–6KL can transition between grid-connected and backup operation almost instantly. Critical appliances can stay powered without noticeable interruption or unnecessary restarts.

• Wide Battery Compatibility | More Freedom of Choice

Beyond perfect synergy with Hypontech’s own HBP series low-voltage batteries, this inverter is fully compatible with market-leading brands like Dyness, Pylontech, Soluna, and BYD, giving you the freedom to choose.

• Designed for Challenging Grid Conditions

The HES 3–6KL is engineered to operate reliably in weak-grid environments, helping maintain stable system performance even when grid conditions are less than ideal.

Multiple protection functions provide an additional layer of safety:

• IP65 protection

• Anti-islanding protection

• Overcurrent protection

• Overvoltage protection

• DC Type II / AC Type III surge protection

From PV input to AC output, and from normal operation to abnormal conditions, multiple protection mechanisms help safeguard the system and maintain reliable operation.

Intuitive Operation & Smarter O&M: See More, Manage More

• A New Display Experience | Everything at a Glance

The HES 3–6KL features a larger, higher-resolution color display, providing a clearer view of system status, energy flows, and operating information.

With both button and touchscreen controls, users can interact with the system in a more intuitive and convenient way.

• Hypon.Cloud | 24/7 Remote Monitoring

With Hypon.Cloud, users can monitor system performance remotely around the clock, configure charging and discharging schedules, and optimize energy consumption based on time-of-use electricity tariffs.

The platform also supports remote firmware upgrades, including nighttime upgrades, helping simplify system maintenance while minimizing disruption to daily operation.

• Flexible System Expansion | Grow with Your Energy Needs

Energy needs can change over time. The HES 3–6KL is designed to grow with them.

Up to 9 HES 3–6KL inverters can be connected in parallel, while the system can also be configured with up to 9 batteries.

From individual homes to small commercial applications, the system can be scaled according to actual energy requirements.

HES 3–6KL: A Smarter Energy Hub for Modern Homes

From high-efficiency solar generation and intelligent load management to EV charging, generator integration, seamless backup, and flexible expansion, the Hypontech HES 3–6KL brings multiple energy functions together in one versatile platform.

More energy. More control. More possibilities. With HES 3–6KL, home energy is no longer simply stored—it is intelligently managed.