5kWh 3.6kW All In One Energy Storage System for Residential Solar Backup

Integrated Solar Storage and Backup Power

This 5kWh all in one energy storage system integrates a 3.6kW pure sine wave inverter, 25.6V battery pack, MPPT solar charger, LCD display and WiFi monitoring within one cabinet.

The system provides 5kWh of rated energy and 4.5kWh of usable energy at 90% depth of discharge, making it suitable for residential solar storage, essential-load backup and electricity self-consumption applications.

By combining the main power and storage components in one enclosure, the system reduces the number of separate units that installers need to position, connect and configure during residential energy storage projects.

Core All In One System Capabilities

Residential Solar Energy Management

Solar Energy Storage

The system can store energy generated by compatible residential solar panels for later household use when photovoltaic production is lower.

Essential-Load Backup

During a grid interruption, the system can supply selected lighting, routers, televisions, computers, refrigerators and other compatible loads within the inverter power limit.

Solar Self-Consumption

Stored solar energy can be used to reduce direct grid consumption during periods when household demand is higher than current solar generation.

Weak-Grid and Off-Grid Applications

The integrated inverter and battery architecture can also support selected weak-grid or standalone power applications when the load and solar array are properly designed.

Electrical and Battery Specifications

Installation and Solar Array Planning

• Install the system in a dry indoor or protected technical area because the enclosure is rated IP20.
• Keep the photovoltaic operating voltage within the 40–450Vdc MPPT range.
• The photovoltaic open-circuit voltage must not exceed 500Vdc.
• Confirm the required AC voltage, grid frequency and wiring arrangement before ordering.
• Allow sufficient space for ventilation, cable routing and maintenance access.
• Apply output derating when the installation altitude exceeds 1000m.

All In One ESS FAQ

How much energy is available from the 5kWh battery?

The battery provides 5kWh of rated energy and approximately 4.5kWh of usable energy when operated at 90% depth of discharge.

What household loads can the 3.6kW inverter support?

It can support compatible loads with combined continuous demand below 3.6kW. High-starting-current appliances must be evaluated according to their surge power and the inverter overload limits.

What solar array can be connected?

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

Does the system provide backup transfer?

Yes. The specified switching time is 10ms. Equipment compatibility should still be confirmed for loads with strict power continuity requirements.

How can the system be monitored?

Operating information is available through the integrated LCD, while USB communication and WiFi monitoring are supported for system setup and status checking.

Can it be installed outdoors?

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

Residential ESS Project Support

This 5kWh all in one ESS is suitable for solar installers, energy storage distributors, electrical contractors and project developers requiring a compact residential solar backup system.

Voltertech provides load confirmation, photovoltaic array matching, AC voltage selection, monitoring configuration, installation data, packaging information and quotation support according to project requirements.