ALFA DS-15kw Lithium Battery
Download Datasheet (PDF)
The ALFA DS-15kw is a wall- or floor-mounted LiFePO4 battery module designed for safe, long-life residential and commercial energy storage.
It features closed-loop communications, robust BMS protections, and support for standalone or parallel installations.
It features closed-loop communications, robust BMS protections, and support for standalone or parallel installations.
Key Features
- Energy: 15.5 kWh @ 51.2 V (304 Ah)
- Chemistry: LiFePO4 (LFP) for high safety and longevity
- Cycle Life: >8,000 cycles @ 90% DoD
- Communications: RS485, CAN, UART (closed-loop support, DIP switch config)
- Active Balancing: 2 A
- Parallel Ready: Compatible with parallel setups
- Enclosure: Galvanized steel housing; wall/floor mount
- Warranty: 10 years (ALFA)
Specifications
| Feature | Details |
|---|---|
| Total Energy | 15.5 kWh |
| Nominal Voltage | 51.2 V |
| Capacity | 304Ah |
| Float Voltage | 54.0 V (±0.2 V) |
| State-of-Charge Cutoff | 5% |
| Charge Current | 80 A (recommended), 120 A (max) |
| Discharge Current | 80 A (recommended), 120 A (max) |
| Balancing | Active, 2 A |
| Measurement Accuracy | Voltage ±0.5%, Current ±3%, Temperature ±3% |
| Interfaces | RS485, CAN, UART; DIP switch config; firmware upgrade capable |
| Protections | Cell OV/UV: 3.4 V / 2.7 V per cell; Module: Max 60 V / Min 44.8 V; Over-charge/Over-discharge Current: >10 s; Short-circuit: >600 A (<0.1 ms); Temperature (Charge/Discharge): <-5 °C or >70 °C / <-20 °C or >75 °C |
| Dimensions (H × W × D) | 970 mm × 640 mm × 150 mm |
| Weight | 75 kg |
| Housing | Galvanized steel |
| Mounting | Wall-mounted / Floor-mounted |
| Ingress Protection | IP345 |
| Operating Altitude | < 5000 m |
| Clearance | ≥ 170 mm on all sides |
| Operating Temp (Charge / Discharge) | 0–50 °C / −20–55 °C |
| Storage Temp | 0–45 °C; store in a cool, dry place |
| Design Life | 20 years |
| Warranty | 10 years (ALFA) |
Installation & Cabling
- Compatible with standalone or parallel installations
- Use recommended terminal torque values (per label/spec)
- Use 2/0 AWG (≈70 mm²) battery cables or as required by run length and codes
- Fully charge all batteries before paralleling
- Follow ALFA inverter documentation for wiring requirements
- Professional installation and proper grounding are mandatory
Communication & Monitoring
- RS485, CAN, UART interfaces with closed-loop support for compatible inverters
- SOC and status indicators on the front panel; ALM/RUN LEDs for diagnostics
Packing List
- Battery unit
- Mounting brackets
- Power cables (red & black)
- Expansion bolts
- User manual
Warranty & Support
Warranty: 10 years (ALFA). Specs subject to change without notice. Product for professional installation only.
