Voltertech Co.,Limited
| Battery Stack Arrangement | Base Battery plus One Expansion Section |
| Expansion Capability | Battery Stack and Parallel Inverter Options |
| Payment Terms | L/C,T/T,Western Union |
| Load Management Method | Two Independently Planned AC Circuits |
| Monitoring Approach | LCD with RS232 / RS485 / CAN Interfaces |
| System Capacity Tier | 30kWh-Class Integrated Storage |
| Power Conversion Format | Integrated 12kW Pure Sine Wave Inverter |
| Installation Footprint | Vertical Floor-Standing Stack |
| Supply Ability | 5000 Sets per Month |
| Delivery Time | 15-25 Days After Deposit Confirmation |
| Packaging Details | Heavy-Duty Wooden Case with Protective Foam |
| Energy Reserve Positioning | Extended Home and Small Business Backup |
| Model Number | ESS-31KWH-12KW-A |
| Brand Name | Voltertech |
| Place of Origin | China |
| Certification | MSDS , UN38.3 |
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Product Specification
| Battery Stack Arrangement | Base Battery plus One Expansion Section | Expansion Capability | Battery Stack and Parallel Inverter Options |
| Payment Terms | L/C,T/T,Western Union | Load Management Method | Two Independently Planned AC Circuits |
| Monitoring Approach | LCD with RS232 / RS485 / CAN Interfaces | System Capacity Tier | 30kWh-Class Integrated Storage |
| Power Conversion Format | Integrated 12kW Pure Sine Wave Inverter | Installation Footprint | Vertical Floor-Standing Stack |
| Supply Ability | 5000 Sets per Month | Delivery Time | 15-25 Days After Deposit Confirmation |
| Packaging Details | Heavy-Duty Wooden Case with Protective Foam | Energy Reserve Positioning | Extended Home and Small Business Backup |
| Model Number | ESS-31KWH-12KW-A | Brand Name | Voltertech |
| Place of Origin | China | Certification | MSDS , UN38.3 |
| High Light | 12kW ESS Energy Storage Battery ，Stackable ESS Energy Storage Battery ，12kW All In One ESS | ||
30.72kWh 12kW All in One Energy Storage System with Stackable Battery Design
This all in one energy storage system combines a 30.72kWh LiFePO4 battery bank with a 12kW inverter, dual MPPT solar charging and two AC output channels. Its stackable structure provides twice the battery energy of the 15.36kWh version while keeping the same 12kW power platform.
The configuration is well suited to larger homes, offices, shops, clinics and small business sites that need a longer energy reserve without moving to a separate battery-room architecture. The inverter, base battery and expansion battery section form one coordinated floor-standing system.
The battery capacity increases to 30.72kWh, while the rated AC output remains 12kW. This gives the system a longer potential operating period when compared with the smaller battery configuration under the same load conditions.
The larger battery bank can also provide more flexibility when part of the stored energy must remain reserved for backup. Actual usable energy depends on inverter efficiency, battery settings, operating temperature and the selected reserve level.
Dual PV inputs support two solar strings, with up to 5000W and 18A listed for each channel. The dual MPPT arrangement can help manage different roof orientations or separate solar-array sections.
Two AC outputs allow priority equipment and flexible loads to be planned separately. When both channels are active, each channel supports up to 6kW, while the combined output remains limited to 12kW.
Parallel inverter operation is supported for projects requiring additional AC power. The final parallel quantity and battery strategy should be reviewed as one complete system.
The IP21 enclosure is intended for a dry indoor or protected technical location. Grid export is not supported.
| Battery Energy and Capacity | 30.72kWh / 51.2V / 600Ah |
| Inverter Output Rating | 12kVA / 12kW / 22000VA Instantaneous |
| AC Output Standard | 220/230Vac ±5% / 50 or 60Hz / Pure Sine Wave |
| Solar Input Channels | 5000W × 2 / 18A × 2 / MPPT |
| PV Operating Window | 60–500Vdc / 500Vdc Maximum Open-Circuit Voltage |
| Battery Voltage Limits | 44V Discharge Cut-Off / 58.4V Charge Cut-Off / 56V Float |
| Battery Current Rating | 100A Continuous Charge / 200A Continuous Discharge Maximum |
| Interfaces and Display | RS232 / RS485 / CAN / Lithium Communication / LCD |
| Battery Component Dimensions | 750 × 450 × 350mm Bottom / 750 × 450 × 260mm Middle |
It adds one battery expansion section, doubling nominal energy while retaining the same 12kW inverter.
No. The rated inverter output remains 12kW; the larger battery primarily increases the available energy reserve.
Yes. Two AC output channels support organized load distribution within the total output limit.
Parallel operation is supported, subject to confirmation of the complete project configuration.
Provide peak power, daily energy use, backup duration, solar-array data, installation space and project quantity.
Send the project load profile and available solar information. We will help compare the 15kWh, 30kWh, 46kWh and 61kWh configurations.
Company Details
Business Type:
Manufacturer
Year Established:
15 Years
Total Annual:
5000000-10000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
About Voltertech Co., Limited Voltertech Co., Limited is a professional provider of energy storage systems and renewable energy solutions, serving distributors, solar installers, EPC contractors, wholesalers, and project developers worldwide. Our product portfolio includes residential energy st... About Voltertech Co., Limited Voltertech Co., Limited is a professional provider of energy storage systems and renewable energy solutions, serving distributors, solar installers, EPC contractors, wholesalers, and project developers worldwide. Our product portfolio includes residential energy st...
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