Achieve True Energy Autonomy with All-in-One Energy Storage System

Yes, many SAJ All-in-One ESS models are designed with modularity for battery expansion:

The HS2 Series typically allows for battery capacity expansion by adding more BOLI-5.0-HV/10 battery modules, reaching up to 20kWh for single-phase or 25kWh for three-phase systems.

The HS3 Series also features an expandable battery design, often with its own battery modules incorporating DC/DC optimizers for better performance.

The CHS2 Series, designed for larger C&I applications, is inherently built for substantial and scalable battery capacity (e.g., 50kWh to 200kWh+ or more) using high-density C&I cells.

Always check the specific model's datasheet for exact expansion capabilities and compatible battery modules.

The SAJ HS3 All-in-One ESS features a seamlessly integrated EV charger (typically 7kW for single-phase models and 11kW for three-phase models). The system's Energy Management System (EMS) intelligently coordinates power:

It prioritizes using available solar energy to charge your EV.

If solar isn't sufficient, it can use stored battery energy.

Finally, it can draw power from the grid if needed, or based on your charging schedule (e.g., charge during off-peak hours).

This integration allows for convenient, cost-effective, and often green EV charging directly from your home energy system, managed through the eSolar platform.

SAJ places a strong emphasis on safety in their All-in-One ESS designs:

Advanced Battery Management System (BMS): All series include a sophisticated BMS to protect against overcharge, over-discharge, over-temperature, over-current, and short circuits.

LFP Battery Chemistry: The use of LiFePO4 (LFP) batteries is inherently safer than some other lithium-ion chemistries.

Integrated Protections: Features like AC/DC Type II Surge Protection Devices (SPDs) are common.

HS3 Series Specifics: Includes battery self-heating for cold climates and internal fire protection systems.

CHS2 Series Specifics: Offers ultimate safety with standard AFCI (Arc Fault Circuit Interrupter), core battery cell health warnings, CO/fire detection within the cabinet, and cabinet-level fire suppression systems.

While the primary design of many hybrid All-in-One systems is for grid-tied applications with backup, certain SAJ models, particularly the CHS2 Series and some H2 LV (Low Voltage) standalone hybrid inverters (which can be part of a custom ESS), offer stronger capabilities for off-grid or unreliable grid scenarios.

The CHS2 series, for instance, supports DC generator input and is built for robust, high-capacity storage, making it suitable for creating resilient off-grid power systems or microgrids. The HS2 and HS3 can provide backup power during outages but are primarily grid-interactive. Always confirm the specific model's off-grid capabilities.

VPP stands for Virtual Power Plant. VPP readiness means the SAJ CHS2 All-in-One ESS has the necessary communication interfaces, control capabilities, and certifications (or is designed to easily obtain them) to participate in grid services programs offered by utility companies or energy aggregators.

By being part of a VPP, the CHS2 system can, for example, provide frequency regulation, demand response, or other ancillary services to the grid, potentially generating additional revenue for the system owner by leveraging its stored energy and smart dispatch capabilities. This is an advanced feature typically relevant for commercial and industrial installations.

Sunriver Electric simplifies your access to the complete range of SAJ All-in-One ESS (HS2, HS3, CHS2):

We ensure you receive 100% genuine, factory-new systems with full SAJ warranties.

Our team provides clear technical data on all integrated components (inverter, battery, BMS) and can offer guidance on selecting the right system capacity and series for your project's energy profile.

We manage the complexities of international sourcing and logistics, ensuring reliable delivery to your global project site (Ex-US).

You benefit from responsive customer service for inquiries and order processing.