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RCT Power Power Battery 3.8 kWh (3.84 kWh) Battery System Home battery High voltage 10 Years Product Warranty
The Power Battery 3.8 kWh is a compact and modular high-voltage storage system designed for efficient PV energy management. With scalable capacity and easy plug-and-play installation, it offers reliable performance for residential applications.
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107
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411 kWh
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1
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4 kWh
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47
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107
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411 kWh
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4 kWh
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167
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641 kWh
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1
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4 kWh
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as of 30.01.2026,
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Performance data
| Type | Battery System |
| Capacity | 4 KWh |
| Efficiency | 96.0 % |
| Voltage | 154 V |
| Voltage min | 120 V |
| Voltage max | 173 V |
Measurements
| length | 340 mm |
| width | 340 mm |
| Height | 600 mm |
| weight | 54 kg |
Manufacturer warranty
| Product warranty | 10 years |
Certificates
German
| Data Sheet |  |
| Guarantee | |
| Manual | |
English
| Data Sheet | |
Power Battery 3.8 kWh – Modular High-Voltage Storage for PV Systems
Product Overview
The Power Battery 3.8 kWh is a compact and modular lithium iron phosphate (LiFePO4) high-voltage storage system designed for efficient PV energy storage. Its scalable design allows for expansion in 1.7 kWh increments, reaching a total capacity of up to 11.5 kWh.
With high efficiency, 25 A charge/discharge capability, and plug-and-play installation, the system is ideal for residential PV applications. The integrated battery management system ensures optimized operation, and real-time app-based monitoring provides full control and data visualization.
With high efficiency, 25 A charge/discharge capability, and plug-and-play installation, the system is ideal for residential PV applications. The integrated battery management system ensures optimized operation, and real-time app-based monitoring provides full control and data visualization.
Technical Data & Specifications
Electrical Data
- Nominal capacity: 3.84 kWh
- Usable capacity (90% DoD): 3.46 kWh
- Cycle life (80% remaining capacity): 5000 cycles
- Nominal voltage: 154 V
- Voltage range: 120 – 173 V
- Maximum charge/discharge current: 25 A / 25 A
- Standby consumption: < 5 W
Mechanical Properties
- Dimensions (HWD): 600 × 340 × 340 mm
- Weight: 54 kg
- Battery units: 2 (expandable up to 6 units)
- Installation type: Floor-standing, indoor use
- Protection rating: IP42
Operating Conditions
- Operating temperature range: +5°C to +40°C
- Connector type: Weidmüller PV-Stick (MC4-compatible)
Compatibility & Scalability
- Scalable configuration: Up to 6 battery units (max. 11.5 kWh)
- Communication interface: CAN
Certifications & Standards
- Safety class: I
- Certifications: CE, UN38.3, EN/IEC 62619, EN/IEC 62133
- EMC Compliance: EN61000-6-2, EN61000-6-3, EN61000-3-2, EN61000-3-3
- Safety Standard: EN/IEC 61010-1:2010
Warranty & Lifespan
- Product warranty: 10 years
Key Features for Installers
✔ Scalable System – Expandable from 3.8 kWh to 11.5 kWh
✔ Easy Installation – Lightweight components (< 25 kg per module) with plug-and-play setup
✔ High Efficiency – 25 A charge/discharge capability for optimized performance
✔ App-Based Monitoring – Full data visualization and remote configuration
✔ Safe & Sustainable – LiFePO4 battery technology with high safety standards
✔ Easy Installation – Lightweight components (< 25 kg per module) with plug-and-play setup
✔ High Efficiency – 25 A charge/discharge capability for optimized performance
✔ App-Based Monitoring – Full data visualization and remote configuration
✔ Safe & Sustainable – LiFePO4 battery technology with high safety standards
Why Choose Power Battery 3.8 kWh?
The Power Battery 3.8 kWh is a modular and efficient high-voltage storage system designed for residential PV applications. Its compact design, scalability, and remote monitoring capabilities make it an ideal solution for flexible energy storage needs.
RCT Power
RCT Power – German Storage and Inverter Solutions for Professionals
RCT Power, based in Germany, develops premium storage systems and inverters. Their products deliver high efficiency, long lifespan, and reliable performance – suitable for residential and commercial applications. With wholesale conditions, express shipping, and secure processing, RCT Power is a reliable partner for professional solar installers.
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