The Sunpack A1 series energy storage system is an ideal solution for both home and commercial use. It's stacked with LiFePO4 cells that offer long working life, and a high-performance BMS ensures the safety and protection of your investment. Equipped with a hybrid inverter that supports both solar photovoltaic panel input and utility grid AC input, the Sunpack A1 series offers reliable power management for your energy needs.
One of the best features of this energy storage system is its flexibility. With a max parallel of up to 4pcs, you can easily customize its capacity to suit your needs. Whether it's for your home or business, the Sunpack A1 series can easily adapt to meet your specific energy requirements.
Portability is another key benefit of this energy storage system. With its built-in wheels, you can easily move it from one place to another, ensuring you have access to reliable power wherever and whenever you need it.
A Residential Energy Storage System is a smart energy storage solution for homeowners that offers a multitude of benefits. It works by storing the energy produced by rooftop solar panels, allowing homeowners to utilize it at their convenience. Here are some advantages of investing in a Residential Energy Storage System:
1. Energy Independence
A Residential Energy Storage System empowers homeowners to keep the energy they generate with solar panels at home, allowing them to become more self-sufficient and less reliant on traditional energy sources.
2. Energy Bill Savings
By storing electricity during off-peak hours and dispensing it during peak hours, homeowners can avoid high-utility charges, allowing them to significantly reduce their electricity bills.
3. Lower Your Carbon Footprint
Generating renewable electricity from home reduces reliance on fossil fuels, which is an essential part of the fight against climate change.
4. Peace of Mind
In the event of a power outage, a Residential Energy Storage System's battery can seamlessly take over and provide power to the home, ensuring that homeowners have uninterrupted access to electricity.

All in one design – The system offers a hybrid inverter ranging from 5 kW to 20 kW, along with a scalable battery, simplifying installation and saving space..
Smart BMS – Comprehensive Protection: Providing protection against over-voltage, over-temperature, overload, and overcharge.
Grade A Cells – By employing top-tier lithium iron phosphate batteries as the core of our energy storage system, we boast immense capacity, lightweight construction, long cycle life (more than 6000 times) and superior power output.
Flexible configuration – Multiple battery modules can be stacked to expand capacity. Friendly wiring connection makes free assembly easier.
Good compatibility – Standard communication protocol, CAN and RS485, is compatible with the majority of popular hybrid and off-grid inverters available in the market.
Easy & Fast Installation – Modular and stackable design, play and plug connection allows for easy connectivity and quick installation, reducing 40% in installation time.
User-Friendly Control – Effortlessly monitor and regulate your energy system by means of App, PC, or Touch-Display interface.
Wiring Diagram for scalable configuration:
| System | ||||
| Model | SP-ESS-5K-5K-A1 | SP-ESS-5K-10K-A1 | SP-ESS-5K-15K-A1 | SP-ESS-5K-20K-A1 |
| Battery Module Qty | 1 | 2 | 3 | 4 |
| Nominal Energy | 5.12kWh | 10.24kWh | 15.36kWh | 20.48kWh |
| Battery Capacity | 100Ah | 200Ah | 300Ah | 400Ah |
| Weight | 78kg | 127kg | 176kg | 225kg |
| Dimension | 560*480*420mm | 560*480*570mm | 560*480*720mm | 560*480*870mm |
| General | |
| Communication | RS485/CAN/WIFI(optional) |
| Working Temperature Range | -15°C~ 55°C |
| Storage Temperature Range | -25°C~ 60°C |
| Operation Humidity | 5% ~ 85% |
| Storage Time / Temperature | 6 months @25℃;3 months @35℃;1 months @45℃; |
| Nominal Operation Altitude | <2000m |
| Cooling Mode | Electric Fan |
| Noise | 60dB(A) |
| IP Rating | IP20 |
| Recommended Operation Environment | Indoor |
| Installation Method | Horizontal |
| Certificate | CE, UL(1741/1973), UN38.3, MSDS |
| Battery Module | |
| Battery Type | LFP |
| Nominal Voltage | 51.2V |
| Working Voltage Range | 44.8~ 57.6V |
| Maximum Charging Current | 100A |
| Maximum Discharging Current | 100A |
| Charging Temperature Range | 0~45℃ |
| Discharging Temperature Range | -10~45℃ |
| Hybrid Charging Maximum Charging Current | 80A |
| DOD | 6000cycles@80%DOD |
| Parallel Quantity | 4 |
| Dimension | 560x480x150mm |
| Weight | 49 kg |
| PV Chage | |
| Solar Charge Type | MPPT |
| Maximum Output Power | 5KW |
| PV Charging Current Range | 0~80A |
| PV Operating Voltage Range | 120~500V |
| MPPT Voltage Range | 120~450V |
| Maximum PV Input Current | 18A |
| Maximum PV Input Power | 5200W |
| AC Charge | |
| Maximum Charge Power | 3150W |
| AC Charging Current Range | 0~40A |
| Rated Input Voltage | 110/120VAC |
| Input Voltage Range | 90~140VAC |
| Frequency | 50Hz/60Hz (Automatic Detection) |
| Mains Charging Efficiency | >95% |
| Switch Time (bypass and inverter) | 10ms(Typical Value) |
| Maximum Bypass Overload Current | 63A |
| AC OUTPUT/ INVERTER | |
| Rated Output Power | 5KW |
| Maximum Output Current | 42A |
| Overload Current | 45A |
| Auto Switch Period | <10ms |
| THD | <3% |
| Output Voltage Waveform | Pure Sine Wave |
| Rated Output Voltage | 120VAC(100/105/110VAC Settable) |
| Output Frequency Range(Hz) | 50Hz ± 0.3Hz/60Hz ± 0.3Hz |
| Peak Power | 10000W |
| On-load Motor Capacity | 4HP |
| Maximum Efficiency | >90% |
| No-load Loss | Energy-saving Mode :≤25W(Manual Setup) |