Voltertech Co.,Limited
| Household Battery Reserve | 25.6kWh Rated / 23.04kWh Usable |
| Payment Terms | L/C,T/T,Western Union |
| Low-Solar Recovery | Utility / Generator Charging |
| Motor Starting Headroom | 24kVA Surge Power |
| Supply Ability | 5000 Sets per Month |
| Home Energy Monitoring | LCD / WiFi / USB |
| Villa Backup Power | 12kW Pure Sine Wave |
| Rooftop Solar Support | 9kW Single MPPT / 15kW Dual MPPT |
| Delivery Time | 10-15 Days for Samples; 30-40 Days for Bulk Production |
| Essential Load Separation | Dual AC Output |
| Home Battery Structure | Five Stackable LiFePO4 Modules |
| Packaging Details | Heavy-Duty Wooden Case with Protective Foam |
| Model Number | ESS-25KWH-12KW-Q-2 |
| Brand Name | Voltertech |
| Place of Origin | China |
| Certification | MSDS , UN38.3 |
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Product Specification
| Household Battery Reserve | 25.6kWh Rated / 23.04kWh Usable | Payment Terms | L/C,T/T,Western Union |
| Low-Solar Recovery | Utility / Generator Charging | Motor Starting Headroom | 24kVA Surge Power |
| Supply Ability | 5000 Sets per Month | Home Energy Monitoring | LCD / WiFi / USB |
| Villa Backup Power | 12kW Pure Sine Wave | Rooftop Solar Support | 9kW Single MPPT / 15kW Dual MPPT |
| Delivery Time | 10-15 Days for Samples; 30-40 Days for Bulk Production | Essential Load Separation | Dual AC Output |
| Home Battery Structure | Five Stackable LiFePO4 Modules | Packaging Details | Heavy-Duty Wooden Case with Protective Foam |
| Model Number | ESS-25KWH-12KW-Q-2 | Brand Name | Voltertech |
| Place of Origin | China | Certification | MSDS , UN38.3 |
| High Light | 25kWh Residential Energy Storage System ，LiFePO4 Residential Energy Storage System ，12kW Home Solar Backup Systems | ||
12kW 25kWh Residential Energy Storage System for Villas and Home Backup
This 12kW 25kWh residential energy storage system is designed for villas, larger homes and residential properties requiring higher output power together with an extended household battery reserve.
Five 5.12kWh LiFePO4 modules provide 25.6kWh of rated storage and approximately 23.04kWh of usable energy at 90% depth of discharge. The capacity can support evening solar self-consumption and selected household circuits during utility interruptions.
The configuration sits between the 20kWh and 30kWh options, making it suitable for homeowners who require additional backup time without installing a larger battery bank.
Daytime Solar Supply
Photovoltaic energy can support compatible household loads while additional generation charges the battery.
Evening Self-Consumption
Stored solar energy can supply selected circuits after rooftop solar production decreases.
Priority Home Backup
Refrigeration, lighting, routers, security systems and home-office equipment can be assigned to essential-load circuits.
Extended Outage Recovery
Compatible utility input or a generator can recharge the battery during prolonged poor weather or utility outages.
Dual AC outputs help installers separate essential circuits from flexible household loads. This allows stored energy to be reserved for equipment that must remain active during an outage.
The 24kVA surge rating provides short-duration starting headroom for compatible air conditioners, pumps and compressors. Continuous combined output remains limited to 12kW.
The dual MPPT charger supports up to 15kW of photovoltaic input. Two channels can be used for suitable solar strings installed on different roof orientations, provided all voltage and current limits are followed.
Backup duration depends on active loads, inverter efficiency, temperature, reserve settings and available solar charging. Approximately 23.04kWh of usable energy does not represent a fixed number of backup hours.
| Home AC Connection | 220 / 230 / 240Vac; L + N + PE |
| Utility Input Range | 90–280Vac Normal Mode / 170–280Vac UPS Mode |
| Frequency and Power Factor | 50Hz / 60Hz Auto Detection / PF 1.0 |
| Backup Transfer Response | 10ms APP / UPS Mode; 20ms Generator Mode |
| Rooftop PV Limits | 90–485Vdc MPPT / 500Vdc Maximum Open-Circuit Voltage |
| Charging Current Limits | 160A PV / 160A AC / 160A Combined |
| Battery Voltage Platform | 51.2Vdc Nominal / 40.5–54.5Vdc Operating Range |
| Installation Environment | IP20 / -10°C to 50°C / Dry Indoor Technical Area |
| Battery Module Data | 540 × 480 × 164mm / Approximately 45kg per Module |
This residential energy storage system supports solar self-consumption, compatible utility charging and backup operation. This page does not claim electricity selling or power export to the grid.
It can support a controlled group of essential circuits overnight. Actual duration depends on average household consumption, system efficiency and battery settings.
Common priority circuits include refrigeration, lighting, routers, security equipment, gates and selected home-office devices.
Compatible equipment may be supported when its running power and startup demand remain within the inverter and surge limits.
The system supports up to 15kW using dual MPPT, subject to the specified voltage, current and photovoltaic string-design limits.
Compatible utility or generator charging can supplement solar energy when photovoltaic production is insufficient.
This 12kW 25kWh residential energy storage system is suitable for solar installers, distributors and project developers serving villas, larger homes and extended household backup applications.
Planning a 25kWh home battery system for a villa or larger residence?
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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