Voltertech Co.,Limited
| Modular Battery Structure | Four Stackable Battery Modules |
| Battery Current Capability | 200A Charge / 400A Discharge |
| Priority Load Distribution | Dual AC Output |
| Monitoring and Control | LCD / WiFi / USB |
| Balanced ESS Configuration | 12kW Output / 20kWh Battery |
| Delivery Time | 10-15 Days for Samples; 30-40 Days for Bulk Production |
| Solar Array Capacity | 9kW Single MPPT / 15kW Dual MPPT |
| Available Storage Energy | 20kWh Rated / 18kWh Usable |
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 5000 Sets per Month |
| Packaging Details | Heavy-Duty Wooden Case with Protective Foam |
| Motor Load Starting Support | 24kVA Surge Power |
| Place of Origin | China |
| Model Number | ESS-20KWH-12KW-Q |
| Certification | MSDS |
| Brand Name | Voltertech |
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Product Specification
| Modular Battery Structure | Four Stackable Battery Modules | Battery Current Capability | 200A Charge / 400A Discharge |
| Priority Load Distribution | Dual AC Output | Monitoring and Control | LCD / WiFi / USB |
| Balanced ESS Configuration | 12kW Output / 20kWh Battery | Delivery Time | 10-15 Days for Samples; 30-40 Days for Bulk Production |
| Solar Array Capacity | 9kW Single MPPT / 15kW Dual MPPT | Available Storage Energy | 20kWh Rated / 18kWh Usable |
| Payment Terms | L/C,T/T,Western Union | Supply Ability | 5000 Sets per Month |
| Packaging Details | Heavy-Duty Wooden Case with Protective Foam | Motor Load Starting Support | 24kVA Surge Power |
| Place of Origin | China | Model Number | ESS-20KWH-12KW-Q |
| Certification | MSDS | Brand Name | Voltertech |
| High Light | 20kWh All In One Energy Storage System ，All In One Energy Storage System 24kVA | ||
12kW 20kWh All In One Energy Storage System with 24kVA Surge and Dual MPPT
This 12kW 20kWh all in one energy storage system combines a pure sine wave inverter, four stackable battery modules, dual MPPT solar charging, dual AC output and WiFi monitoring in one coordinated platform.
The battery bank provides 20kWh of rated energy and approximately 18kWh of usable energy at 90% depth of discharge. It offers more backup reserve than the 15kWh configuration while remaining more compact than larger 30kWh or 60kWh systems.
With 12kW continuous output and 24kVA surge power, the system is suitable for villas, larger homes, home offices, small shops and generator-supported solar projects with compatible motor-driven loads.
The solar charger supports up to 9kW of photovoltaic input with one MPPT or up to 15kW when both MPPT channels are used. Two tracking channels can support suitable solar strings installed on different roof sections or orientations.
Solar energy can supply compatible daytime loads and charge the battery. When solar production decreases, stored energy can support selected circuits according to the configured source and load priorities.
Compatible utility input or a generator can provide an additional charging source during poor weather or extended outages. Generator voltage, frequency and available power must be confirmed before commissioning.
| AC Input and Wiring | 220 / 230 / 240Vac; L + N + PE |
|---|---|
| Input Voltage Window | 90–280Vac Normal Mode / 170–280Vac UPS Mode |
| Frequency and Power Factor | 50Hz / 60Hz Auto Detection / PF 1.0 |
| Source Transfer Response | 10ms APP / UPS Mode; 20ms Generator Mode |
| PV Operating Limits | 90–485Vdc MPPT Range / 500Vdc Maximum Open-Circuit Voltage |
| Charging Current | 160A PV / 160A AC / 160A Combined |
| Battery Voltage Range | 51.2Vdc Nominal / 40.5–54.5Vdc Operating Range |
| Operating Environment | IP20 / -10°C to 50°C / 5–95% Non-Condensing |
| Module Size and Weight | Inverter: 540 × 480 × 180mm / 27kg; Battery: 540 × 480 × 164mm / 45kg Each |
The 20kWh configuration provides additional operating time while retaining the same 12kW output platform. It suits customers who need more reserve without moving to a 30kWh system.
No. Continuous output is 12kW. The 24kVA value represents short-duration starting headroom for compatible loads.
Yes, suitable separate strings can be connected when each input remains within the specified voltage, current and power limits.
Not necessarily. Backup duration depends on the average active load, inverter efficiency, battery settings, temperature and available solar charging.
The installation area should provide stable support, dry indoor placement, ventilation, cable access and suitable handling for four battery modules weighing approximately 45kg each.
This 12kW 20kWh all in one energy storage system is suitable for solar distributors, installers and project developers requiring balanced output power, modular storage and dual MPPT solar charging.
Planning a 12kW solar storage project with a four-module battery bank?
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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