Sunsynk L5.1 – 5.12kWh L-Series Battery
Product overview
Sunsynk L5.1 – 5.12kWh L-Series Battery
The Sunsynk L5.1 – 5.12kWh L-Series Battery is a high-performance LiFePO4 energy storage solution for residential and light-commercial systems. With 5.12kWh capacity, it delivers reliable power for high-demand applications while maximising long-term battery life. Its intelligent BMS monitors voltage, current and temperature, protecting against overcharge, over-discharge, over-current, and extreme temperatures. Up to 8 units can be connected in parallel for scalable capacity, with quick paralleling requiring no dip switches. The compact, wall-mounted IP65-rated design ensures safe operation in a wide temperature range and easy installation.
Key Features & Benefits
5.12kWh LiFePO4 battery provides safe, long-life energy storage for residential and light-commercial applications- Supports up to 90% depth of discharge to maximise usable energy
- Built-in BMS monitors voltage, current, and temperature for safe, balanced operation
- Advanced protection: Overcharge, over-discharge, over-current, and high/low temperature safeguards
- Automatically manages charge/discharge and balances current and voltage for each cell
- Parallel capability supports up to 8 L5.1 units for scalable energy systems
- Quick paralleling with no dip switches for fast, simple installation
- Compatible with Sunsynk hybrid inverters for seamless integration
- Wall-mounted or 19-inch rack-mount design saves space and enables organised, secure installation
- IP65-rated for indoor/outdoor use, with safe operation from -20ºC to 55ºC
- Self-cooling design reduces system noise
- Low self-discharge: Up to 6 months shelf life without charging, no memory effect, and excellent shallow charge/discharge performance
- Auto-networking for battery communication, easy maintenance, and remote monitoring/firmware upgrades
- Non-toxic, non-polluting, and environmentally friendly
Why Choose the Sunsynk L5.1 – 5.12kWh L-Series Battery?
The Sunsynk L5.1 L-Series Battery is a reliable, scalable energy storage solution for homes and small commercial systems. Featuring LiFePO4 chemistry, it offers enhanced safety, a long life and consistent performance. The L5.1 L-Series Battery includes intelligent BMS protection and supports parallel expansion. It installs easily and provides dependable backup power while optimising energy use.
Sunsynk Battery Range List
- IP65 L-Series (3.07kWh | 5.12kWh | 5.32kWh): A robust, weather-resistant compact option perfect for residential outdoor or 19-inch rack installations with no dip switches required
- IP20 G-Series (5.32kWh): An optimised indoor storage module featuring 90% depth of discharge and effortless scalability up to 32 units in parallel
- IP65 W-Series (5.32kWh | 10.64kWh): The ultimate all-weather solution, featuring an integrated 125A circuit breaker and advanced low-temperature charging down to -10°C
- IP20 REPT Series (5.32kWh – Wall Mounted | Rack Mounted): Made for high-capacity energy independence, supporting massive system builds up to 159.75kWh per inverter
For Additional Information on the Sunsynk L5.1 – 5.12kWh L-Series Battery, please consult the Technical Data Table or PDF File below.
*Technical Data subject to change without notice.
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+44 (0)1744 762 929Technical Data
MAIN PARAMETER |
| SUNSYNK-L5.1 | |
| BATTERY CHEMISTRY | Lithium Ferro Phosphate (LifePO4 or LFP) |
| CAPACITY | 100 Ah |
| SCALABILITY | Max. 32 pcs in parallel (163.8 kWh) |
| NOMINAL VOLTAGE | 51.2 V |
| OPERATING VOLTAGE | 43.2~57.6 V |
| ENERGY | 5.12 kWh |
| USABLE ENERGY [¹] | 4.61 kWh |
| CHARGE / DISCHARGE CURRENT - RECOMMENDED [²] |
50 A |
| CHARGE / DISCHARGE CURRENT - MAX. [²] |
100 A |
| CHARGE / DISCHARGE CURRENT - PEAK (2 MINS, 25ºC) |
150 A |
[¹] DC Usable Energy, test conditions: 90% DOD, 0.5C charge & discharge at 25° C. System usable energy may vary due to system configuration parameters.
[²] The current is affected by temperature and SOC.
OTHER PARAMETER |
| SUNSYNK-L5.1 | |
| RECOMMENDED DEPTH OF DISCHARGE | 90% |
| DIMENSIONS (W x H x D) |
440 x 620 x 135 mm (doesn’t include circuit breaker, terminals and hanging boards) |
| APPROXIMATE WEIGHT | 50kg |
| MASTER LED INDICATOR | 5 LED (SOC 20%~100%) |
| MASTER LED INDICATOR |
3 LED (working, alarming, protecting) |
| IP RATING OF ENCLOSURE | IP65 |
| WORKING TEMPERATURE | Charge: 0ºC ~ +55ºC (optional heating: -20ºC~+55ºC) Discharge: -20ºC ~ +55ºC |
| STORAGE TEMPERATURE | -20ºC ~ +35ºC |
| HUMIDITY | 5% ~ 95% |
| ALTITUDE | ≤2000m |
| INSTALLATION | Wall Mounted or 19-inch standard cabinet |
| COMMUNICATION PORT | CAN2.0, RS485 |
| CERTIFICATION | IEC62619, CE, UN38.3 |