8kWh 3.6kW All In One Energy Storage System for Residential Solar Backup

Integrated Power and Storage in One Cabinet

This 8kWh all in one energy storage system combines a 3.6kW inverter, battery storage, MPPT solar charging, system control and monitoring functions within one integrated cabinet.

It provides 8kWh of rated battery energy and approximately 7.2kWh of usable energy at 90% depth of discharge, making it suitable for residential solar backup projects that require longer operating time than smaller-capacity systems.

The integrated structure reduces the number of separate components that installers need to position, wire and configure, while supporting solar charging, grid charging and selected backup circuits.

Why Choose the 8kWh Configuration

Typical Solar Backup Applications

Residential Essential Loads

Suitable for selected lighting, routers, televisions, computers, refrigerators, security equipment and communication devices during temporary outages.

Solar Self-Consumption

Stores compatible photovoltaic generation for later use when household demand continues after daytime solar production decreases.

Small Office and Retail Backup

Can support compatible POS terminals, network devices, computers, CCTV equipment, lighting and other low-power business loads.

Weak-Grid Power Support

The combination of solar input, battery storage and AC charging is suitable for projects in areas with unstable or intermittent utility electricity.

Load and Backup Time Planning

The system provides approximately 7.2kWh of usable battery energy at 90% depth of discharge. Actual operating time depends on connected load, conversion efficiency, battery condition and operating temperature.

Motor-driven equipment such as refrigerators, pumps and air conditioners may require higher startup power. Both normal operating demand and starting demand should be checked before installation.

Installation and Electrical Specifications

Solar Array and Site Planning

The MPPT solar charger supports photovoltaic input up to 5000W and 18A. The operating voltage range is 40–450Vdc, with a maximum photovoltaic open-circuit voltage of 500Vdc.

• Calculate string voltage using the solar panel open-circuit voltage.
• Allow for voltage increases under low-temperature conditions.
• Keep photovoltaic input current within the specified limit.
• Confirm cable size, connector type, polarity and protective devices.
• Install the system in a dry indoor or protected technical area.
• Apply output derating when installation altitude exceeds 1000m.

All In One Energy Storage FAQ

What is the difference between battery capacity and inverter power?

Battery capacity determines expected operating time, while inverter power determines the maximum continuous load that can be supplied at one time.

How much usable energy does the system provide?

The system provides approximately 7.2kWh of usable battery energy when operated at 90% depth of discharge.

Can it support refrigerators or pumps?

Selected motor-driven appliances may be compatible when their normal operating power and startup demand remain within the inverter output and overload limits.

What photovoltaic array can be connected?

The system supports up to 5000W and 18A of photovoltaic input. The MPPT operating range is 40–450Vdc, and the open-circuit voltage must remain below 500Vdc.

Can it be installed outdoors?

The enclosure is rated IP20 and should be installed in a dry indoor or protected technical location. It is not presented as a weatherproof outdoor product.

What information is required for project selection?

Provide the installation country, AC voltage, connected-load list, appliance startup power, solar panel specifications, required backup duration and order quantity.

All In One ESS Project Support

This 8kWh all in one energy storage system is suitable for solar installers, energy storage distributors, electrical contractors and project developers requiring longer backup duration within a compact integrated system.

Voltertech provides load assessment, photovoltaic array matching, AC voltage selection, monitoring setup, installation data, packaging information and quotation support.